Plaintiffs appeal from a district court judgment dismissing their equal protection claims against the Town of Lisbon, New Hampshire, and its chief of police, Richard Grayson, for failing to investigate allegations that their father abused them sexually while they were minors. We affirm.
I
BACKGROUND
Although the three sisters first lodged these allegations in 1983, Grayson took no action other than to misrepresent that the district attorney had declined to prosecute. Seven years later, after attaining their majority, plaintiffs discovered Grayson’s misrepresentation and took their allegations to the district attorney. Their father presently is serving a lengthy prison sentence, following his conviction for aggravated sexual assault.
Plaintiffs filed the instant action against the Town and Grayson, in his individual and official capacities, claiming inter alia that Grayson refrained from investigating their allegations either because plaintiffs were female, children, or victims of domestic sexual abuse, and that such selective law enforcement violated their individual rights under the Equal Protection Clause. See U.S. Const, amend XIV; 42 U.S.C. § 1983. 1 In due course, the equal protection count against the Town was dismissed for failure to state a claim. See Fed.R.Civ.P. 12(b)(6). Following discovery, defendant Grayson was awarded summary judgment on the individual-capacity claim because plaintiffs had failed to adduce sufficient evidence that he intended to discriminate due to their membership in any of the three classes alleged in their complaint. The district court thereafter denied plaintiffs’ postjudgment motion for reconsideration. See Fed.R.Civ.P. 59.
II
DISCUSSION
A. The Equal Protection Claim Against Grayson 2
The Fourteenth Amendment mandates that no State “deny to any person within its jurisdiction the equal protection of the laws.” U.S. Const. amend XIV. Thus, although there is no constitutional right to police protection, State executive and law enforcement officials may not “selectively deny ... protective services to certain disfavored minorities.”
DeShaney v. Winnebago County Dep’t of Social Servs.,
Plaintiffs rely on
City of Cleburne v. Cleburne Living Ctr.,
Plaintiffs misconstrue the
Cleburne
decision. There the Supreme Court expressly noted the finding made by the district court that the municipality’s principal reason for denying the requested zoning permit had been “that the residents of the [plaintiff] home would be persons who are mentally retarded,”
id.
at 437,
The motivation underlying a municipal decision is not always so apparent as in
Cleburne,
of course, especially if the challenged decision does not expressly single out a particular class of persons for disadvantageous treatment. Even in such instances, however, members of the plaintiff class quite understandably may consider it no mere coincidence that a facially neutral decision causes a disproportionately unfavorable impact on their particular class. Nevertheless, even evidence of a widely disproportionate impact on the plaintiff class normally is not enough, standing alone, to establish an equal protection violation.
See, e.g., Personnel Adm’r of Mass. v. Feeney,
The burden is an onerous one: “ ‘Discriminatory purpose’ ... implies that the decisionmaker ... selected or reaffirmed a course of action at least in part
‘because of’
not merely ‘in spite of,’ its adverse effects upon an identifiable group.”
Feeney,
Plaintiffs claim that the district court disregarded competent evidence that Gray-son harbored “archaic stereotypes” regarding female-child sexual abuse in the home and singled out its victims for unfavorable treatment in determining whether to investigate. The record does not support their contention, however. 5
*454 At no time did Grayson indicate to anyone that he would not investigate allegations of child sexual abuse in the home because he thought the victims were undeserving of equal law-enforcement protection. Instead, he explained to a fellow officer that he had refrained from investigating plaintiffs’ allegations at their mother’s request. 6 Another police officer confirmed that it was Grayson’s policy not to intervene where a family member {e.g., nonabusive parent or spouse) requested that there be no investigation.
Plaintiffs essentially claim, nonetheless, that their evidence supported, respectively, rational inferences that Grayson intended to treat all domestic crime differently from nondomestic crime, all crimes against children differently from crimes against adults, and all sexual abuse crimes differently from nonsexual crimes. 7 Once again the evidence does not bear out their claim.
Plaintiffs’ proffer disclosed that the nonintervention policy attributed to Grayson may have been much broader than plaintiffs allow, in that it applied not merely to domestic child sexual abuse, but to other crimes in circumstances where general concerns for family integrity and family privacy predominated.
8
Thus, their proffer may be seen to belie their contention that Grayson sought to discriminate against them
because of,
rather than
in spite of,
their status as victims of child sexual abuse in the home.
See Feeney,
Similarly, plaintiffs presented evidence that Grayson, on two other occasions, failed to investigate allegations of child sexual abuse in the home. Once again, however, there was no evidence that Grayson was motivated by a discriminatory animus, as distinguished from a neutral nonintervention policy. Moreover, Grayson proffered undisputed evidence that he had investigated at least two other domestic child sexual abuse cases, as well as eight nondomestic child
*455
sexual abuse eases.
Cf. Willhauck v. Halpin,
Finally, in an ironic twist, the discriminatory focus essential to plaintiffs’ equal protection claims was irredeemably blurred by their proffer that the Grayson nonintervention policy extended well beyond domestic child sexual abuse eases
{e.g.,
to DWI and vandalism), and may even have been due to Grayson’s dishonesty, chronic lassitude, alcohol abuse, or desire to wage personal vendettas against particular individuals rather than groups.
See New Burnham Prairie Homes, Inc. v. Village of Burnham,
B. The Equal Protection Claim Against the Municipality
The district court dismissed the equal protection count against the Town for failure to state a claim.
See
Fed.R.Civ.P. 12(b)(6). Eighteen months later, plaintiffs moved to reinstate and amend the claim,
see
Fed.R.Civ.P. 15, to allege that the Town should be held liable either because Grayson was the municipal official who instituted the official “policy” against providing law-enforcement protection to child victims of sexual abuse in the home,
see Monell v. Department of Social Servs. of New York,
The district court denied the motion to amend, on the ground that its earlier Rule 12(b)(6) dismissal amounted to a decision “on the merits” and, accordingly, the law of the case.
10
Even assuming the rationale for the instant decision were to be found infirm,
see Griggs v. Hinds Junior College,
Rule 15 permits the trial court to deny leave to file an amended complaint which would be subject to immediate dismissal under Rule 12(b)(6) for failure to state a
*456
viable claim for relief.
See Foman v. Davis,
Plaintiffs simply allege that the Town is liable under section 1983 because Grayson established an official Town policy or custom of selective law enforcement which in turn caused them injury. 12 Since their predicate claim against Grayson fails, however, see supra Section II.A, so must their contention that any such discriminatory Town policy or custom existed.
Alternatively, of course, the Town could be held liable under section 1983 were it to appear that the injury to plaintiffs was caused by the Town’s
failure to train
Gray-son. The liability criteria for “failure to train” claims are exceptionally stringent, however.
See City of Canton v. Harris,
Only if the failure to train “amounts to
deliberate indifference
to the rights of persons with whom the police come into contact,” and is “closely related” to, or “the moving force” behind, the constitutional injury, can the claim against the municipality prevail.
Id.
(emphasis added). For this “deliberate or conscious choice” to have been established, plaintiffs needed to present evidence that (1) the Town knew when it hired Grayson that the risk of future equal protection violations arising and recurring in domestic child sexual abuse cases was “so obvious” that its failure to train him therein likely would result in continued violations;
or
(2) even though the initial risk of recurring constitutional violations was not “so obvious,” the Town subsequently learned of a serious recurrence, yet took no action to provide the necessary training.
Id.
at 390 & n. 10,
To begin with, plaintiffs merely allege that “Lisbon
is
a high crime area in northern Grafton County [and] that much or most of the crime committed in northern Grafton County
involves
domestic violence and sexual abuse.” (Emphasis added.) There is no al
*457
legation that these circumstances obtained in 1975, however, when Grayson became the police chief. No less importantly, even assuming similar circumstances prevailed in 1975, the need to train Grayson was not “so obvious, [nor] the [alleged] inadequacy [of the training] so likely to result in the violation of constitutional rights, that the [Town] can reasonably be said to have been deliberately indifferent to the need [for training].”
City of Canton,
It bears reminding that the gravamen of the amended complaint is not that Grayson did not adequately investigate these allegations, but that he purposely chose not to investigate them at all. It is reasonable to observe, therefore, that whatever relevant training the Town failed to give Grayson would not have entailed specialized law-enforcement investigatory skills, but simply the commonplace understanding that police officers may not deny law-enforcement protection based simply on their arbitrary classifications of various groups of crime victims.
Thus, the amended complaint asserted no sufficient basis for concluding that Town policymakers reasonably should have anticipated that a new police chief would need specialized instruction in so rudimentary a law-enforcement responsibility, nor that the Town had been put on notice that such equal-protection violations were routine occurrences in domestic child sexual abuse cases, either locally or elsewhere. Rather, unlike many other law-enforcement responsibilities,
cf, e.g., id.
at 390 & n. 10,
Finally, plaintiffs have not alleged that the Town was ever placed on notice that Gray-son,
after
he was appointed in 1975, routinely violated the equal protection rights of citizens by engaging in selective and arbitrary law enforcement.
See Swain v. Spinney,
Needless to say, our conclusion represents no endorsement of the conduct with which Grayson is charged in the complaint. It would be dereliction of duty for a police chief to turn over to private parties the decision whether a serious offense should be pursued and it is hard to imagine what might justify telling a complainant falsely that the prosecutor would have no interest in the complaint. Nevertheless, not every form of misconduct is a constitutional violation — most wrongs find their remedy under state law— and our present holding is simply that the allegations made in the complaint do not properly assert a violation of the Equal Protection Clause.
Affirmed.
Notes
. It is undisputed that Grayson at all times acted under color of state law. See 42 U.S.C. § 1983.
. After examining all competent evidence in the light most favorable to the party opposing summary judgment, we are required to make a
de novo
determination as to whether a trialworthy issue remained or the moving party was entitled to judgment as a matter of law.
See Dominique v. Weld,
. The Equal Protection Clause safeguards not merely against such invidious classifications as race, gender and religion, but any arbitrary classification of persons for unfavorable governmental treatment.
Cf. Wayte v. United States,
. The other case relied upon by plaintiffs in this regard is to the same effect.
See Navarro v. Block,
.Plaintiffs adduced no evidence that Grayson’s reluctance to pursue criminal investigations was based on their gender. On the contraiy, plaintiffs proffered evidence that Grayson failed to investigate a 1990 allegation that a 12-year-old boy had been sexually molested by his grandfather. Nor did plaintiffs adduce statistical or other evidence relating to whether females comprise *454 a majority of (1) sexual abuse victims; (2) domestic sexual abuse victims; (3) sexually abused minors; or (4) minors sexually abused in the home. Furthermore, Officer Boutin attested that though Grayson often did not pursue allegations of crimes committed against children if a nonof-fending adult family member urged him not to do so, this "policy" did not depend on whether the victims were male or female. See infra note 8. Given its serious deficiencies, the gender classification claim quite properly was rejected by the district court.
. Specifically, the mother told Grayson that “she did not want the girls involved in a prosecution.” Plaintiffs have not contested this evidence.
. The district court reserved the question whether the evidence relating to Grayson’s own statements would be admissible. See Fed.R.Evid. 801(d)(2) (admission by party-opponent).
. In the portion of Officer Boutin's deposition proffered below, the inquiry is ambiguously phrased by plaintiffs in terms of how Grayson acted "in these kinds of cases” compared to "other [] more conventional kinds of crimes,” without particularizing any characteristic of these alleged crimes which was unconventional in their view (e.g., domestic, sexual abuse, or crimes against children or female victims), or which triggered the Grayson nonintervention policy. Perhaps for this very reason, then, Officer Boutin ambiguously responded that the police "took into [account] what the mother had to say or the victim's rights were, I mean, emotions were,” and "if the family's wishes were that it didn’t get prosecuted, then it didn’t.” Although Boutin allowed that the Grayson nonintervention policy would apply to crimes against children, at no time did he state that it applied exclusively to such crimes. These unaddressed ambiguities plainly invited a rational inference that the challenged nonintervention policy was predicated on a generalized concern for family integrity and privacy, which would be activated, for example, at the instance of a nonoffending spouse even though the allegations may have related to nonsexual criminal activity directed against an adult family member.
. The district court denied plaintiffs' post-judgment motion for reconsideration,
see
Fed.R.Civ.P. 59, because their “new" evidence of discriminatory intent had been available at summary judgment. Plaintiffs respond that Gray-son’s motion for summary judgment failed to put them on adequate notice that he disputed their allegations of discriminatory intent. We review the Rule 59 decision only for manifest abuse of discretion.
See Vasapolli v. Rostoff,
The Grayson motion could not have been more explicit: "Defendant Grayson denies any intent to discriminate against the plaintiffs on any basis.” Further, "[tjhe plaintiffs have produced no evidence suggesting that defendant Grayson wanted to harm them because they were women, or because they were minors, or because they were alleged victims of sexual assaults.” True, plaintiffs' default may flow from their misreading of
Cleburne. See supra
pp. 452-53. Nevertheless, "[Rule 59] does not provide a vehicle for a party to undo its own procedural failures, and it certainly does not allow a party to introduce new evidence or advance arguments that could and should have been presented to the district court prior to the judgment.”
Aybar v. Crispin-Reyes,
. We review the Rule 15 decision for abuse of discretion.
RTC v. Gold,
. Municipal customs, for § 1983 purposes, are “such practices of state officials ... [as are] so permanent and well settled as to constitute a 'custom or usage’ with the force of law.”
Id.
at 691,
. We assume arguendo that Grayson, as police chief, was a Town policymaker with respect to law enforcement.
. We have considerable doubt whether the failure-to-train claim survived either the dismissal of the § 1983 claim against Grayson, individually,
see supra
Section II.A, or the
Monell
policy-based claims against the Town and Grayson, in his official capacity,
supra.
If Grayson never violated plaintiffs’ constitutional rights in the first instance, it is difficult to see how a failure to train him could have
caused
any "constitutional injury” to plaintiffs.
Compare Evans v. Avery,
.
City of Canton
requires not only deliberate indifference but that the alleged failure to train be shown to have been the "closely related” cause of the constitutional injury.
Id.
at 390-91,
. As no "federal question” claims remain, we also affirm the district court’s discretionary decision not to exercise its supplemental jurisdiction over plaintiffs’ state-law claims for negligence and intentional infliction of emotional distress against the Town and Grayson. See 28 U.S.C. § 1367(c)(3).
