Found guilty by a jury of assault with a dangerous weapon (D.C.Code § 22-502 (1989)), appellant assigns three errors relating to the conduct of the trial. Athough we conclude there was error in the manner by which the prosecutor sought to impeach a defense witness, we find insufficient resultant prejudice to require reversal of appellant’s conviction.
I.
On the evening of August 23, 1991, the band “Raw Productions” played a free con *1319 cert in Fort Stanton Park. Appellant was a vocalist with the band that evening, and the complaining witness, A1 Campbell, played bass guitar. When the concert ended and the band was breaking down its equipment, appellant began playing the drums. Campbell eventually asked him to stop playing and, when appellant refused, took the drum sticks from his hands. The pair shoved each other and exchanged ineffectual punches, until a third band member stepped between them and appellant walked away. Campbell continued disassembling his guitar, and as he was carrying it toward the band’s truck, told appellant that “the only thing I did was to tell you to stop beating on the drums.” According to Campbell and three other eyewitnesses, appellant yelled obscenities and words such as “This ain’t over, it’s not over yet.” Appellant then hurdled a low stone wall and ran toward Campbell. 1 The two squared off, Campbell threw a punch that missed, and appellant responded by stabbing Campbell in the chest. (Although none of the government’s witnesses actually saw the knife, appellant testified and admitted stabbing Campbell, claiming self-defense). Campbell was hospitalized for a knife-wound to the chest. Altogether four witnesses, including Campbell, testified that appellant was the aggressor in the fray in that it was he who had run toward Campbell after the initial fight terminated.
II.
Appellant contends that the trial judge abused his discretion in permitting the government, on redirect examination of John Young, a band member and eyewitness, to introduce the entirety of a song Young had written chronicling the events of the August 23rd evening. The judge admitted the complete text of the song under the rule of completeness. The issue originated when, on cross-examination of Young, appellant’s counsel established that Young was a friend of Campbell and had written a song about the altercation with appellant. Counsel directed Young’s attention to the last three sentences of the song, which stated in part, “[RJemem-ber what I told you. You not locked up yet. It ain’t over.” Counsel asked if this language did not reveal Young’s intent “to get even” with appellant. 2 Young replied that it was not his “place to get even,” and that the words “It ain’t over” were a phrase appellant had used at the time of the fight, which Young had “rephrased ... into a meaning that I felt was safe to me.”
On redirect examination of Young, over defense objection, Young was allowed to read the entirety of the song, which began by chronicling the band’s, successful performance that night (“They cranked, they grooved, they moved the crowd”), then blamed appellant for “startling] this mess” that followed:
Couldn’t handle yourself. You knew you were wrong. Started eating at your mind before too long. You took a walk with Hawk. We thought this mess was done. Walked down around the wall, then you started to run. Jumped over the wall.
What happened next? Swung a hook, but, look, you stabbed A1 in the chest. Wrong. Wrong. Two strikes not enough. Had to follow them across the street. You’re tough. Stopped half way. Started talking back, going after Hawk with a verbal attack. It ain’t over. It ain’t over. It ain’t finished yet. Wrong. You finished, but we’re not.
You want it to get hot, screaming, yelling, stabbing and telling. Everybody out there what was up. You wrote a check with your mouth. You couldn’t cash with your — but take a listen and remember what I told you. You not locked up yet. It ain’t over. [Emphasis added.]
In
Butler v. United States,
The rule of completeness allows a party, once part of a document or recorded statement has been introduced into evidence, to seek admission of other parts of that same statement “in order to secure for the tribunal a complete understanding of the total tenor and effect of the [statement].”
Id.
III.
Appellant’s next two claims of error have more substance, though ultimately we find that neither warrants reversal. Both arise from the impeachment of one of four defense witnesses, Maurice Tiller, assertedly about his ability to recall the events of the assault, and about his partiality as a witness.
A.
Maurice Tiller was a keyboard player for the band on the night in question. On cross-examination, the prosecutor asked Tiller whether he had used cocaine that night or whether there was “[anything in [his] body or in [his] system” at the time that “would have [a]ffected [his] ability to remember or perceive” the events he had testified about. When Tiller answered “no” or “not that I know of’ to these questions, the prosecutor introduced rebuttal evidence that he had tested positive for cocaine use on April 20 and September 13, 1991, four months before and three weeks after the date of the assault, respectively.
On appeal, the government contends that the prosecutor had a good faith basis to question Tiller about possible drug intoxication at the time of the assault, relying on the settled principle “that the ‘use of narcotics [at the time of the offense] is a proper subject of inquiry going to the credibility of the witness in his recollection of the events in question.’ ”
Durant v. United States,
In light of this precedent, the government instead takes a different tack on appeal. It points to the fact that Tiller denied
ever
using cocaine, and asserts that the prosecutor was “arguably” entitled to refute this broad denial under the doctrine of specific contradiction. But the government’s equivocation is warranted because, as it concedes, this basis for impeachment applies only where the witness has “gratuitously offered” an asserted mistruth.
Patterson v. United States,
Prosecutor: Mr. Tiller, it is true, isn’t it, that you are a cocaine user?
Tiller: No, ma’am.
Prosecutor: It is not true?
Tiller: No.
Prosecutor: How can you say that? What [do] you mean by that when you say you are not a cocaine user?
Tiller: I don’t use.
Prosecutor: You mean to say you have never used?
Tiller: Never use no drugs.
Prosecutor: In your entire life?
Tiller: In my entire life.
The trial judge correctly saw the irrelevance of this questioning and steered the prosecutor to the proper form of question (quoted earlier) focusing on Tiller’s possible use of drugs at or around the time of the offense. But it clearly is not open to the government to argue that Tiller “gratuitously offered” a general denial which it was entitled to impeach with otherwise irrelevant evidence of his past drug use.
The parties dispute whether appellant adequately preserved this claim of error, the government contending we must apply a plain error standard of review. Our decision that the error was harmless, part IV, infra, makes it unnecessary to resolve this dispute.
B.
Also on cross-examination of Maurice Tiller, the prosecutor elicited from Tiller over objection that he was currently awaiting trial in two separate cases charging him with distribution and possession of cocaine, respectively. The purpose of this inquiry, as one of the prosecutor’s follow-up questions implied, was to suggest to the jury that Tiller “[didn’t] like the police or the Government very much.” On appeal, the government relies on two principles to support the questioning. The first is the general rule that “[p]roof of bias is almost always relevant because the jury, as finder of fact and weigh-er of credibility, has historically been entitled to assess all evidence which might bear on the accuracy and truth of a witness’ testimo
*1322
ny.”
United States v. Abel,
The law generally prohibiting impeachment with the fact of arrests or criminal charges serves as an important check on the introduction of character evidence in criminal trials. Given the risk that evidence of such embroilment with law enforcement authorities may paint the witness (particularly a defendant) as a “bad man,”
Marcus v. United States,
We view this as too attenuated a theory of relevance, without additional circumstances, to justify a large-scale breach in the rule barring proof of arrests or criminal charges. A witness with a liberty interest in gaining preferential treatment from the government has a discernible bias, at least as a matter of relevance. Hence the right to question a government witness about a current adversarial relation to law enforcement enjoys constitutional protection,
see Delaware v. Van Arsdall,
This will not always be true, of course.
Staton v. United States,
Similar evidence of personal, even pecuniary motive (the detective’s conflict in
Staton
was with her
employer,
the police department) inferable from the fact of arrests or charges is present in
Heath v. Cast,
Unlike the witnesses in these cases, Maurice Tiller had no more to gain by testifying untruthfully than any other defense witness wanting to keep a friend out of jail. 5 His asserted desire to “get back at” the government for pending unrelated charges is too thin a reed on which to support the admission of charges that had the effect (together with the other impeachment evidence discussed above) of placing Tiller’s character as a drug abuser before the jury. Thus, there was error in this aspect of the impeachment as well.
IV.
Neither singly nor in combination, however, are we convinced that these errors warrant reversal of appellant’s conviction. D.C.Code § ll-721(e) (1989);
Kotteakos v. United States,
Affirmed.
Notes
. Appellant testified, conversely, that it was Campbell who had run toward him.
. A moment before, counsel had asked Young whether he did not “want to do everything possible to see that Tony [Williams] goes to jail....”
. In Beno the court stated:
[W]here a defendant, in his direct testimony, falsely states a specific fact, the prosecutor will not be prevented from proving, either through cross-examination or by calling its own witnesses, that he lied as to that fact.... The rationale behind this rule is not difficult to perceive, for even if the issue injected is irrelevant or collateral, a defendant should not be allowed to profit by a gratuitously offered misstatement.
. The witness may, in fact, be an unwilling one (whom the defense has had to subpoena) precisely because of his fear of offending prosecutors in his own case.
. In
United States v. Bagaric,
. Maurice Tiller's testimony covers only eight pages of the trial transcript (only three relating to disputed facts) and asserted merely that Campbell followed appellant just before appellant stabbed him and that appellant then left in the car of another band member, Phillip Tiller.
