Commonwealth v. Privette
491 Mass. 501
Mass.2023Background:
- Early morning armed robbery dispatch (3:35 A.M.) described a Black male, late twenties, ~5'7"–5'8", blue hoodie/jeans, on foot toward a nearby pharmacy; later broadcasts added facial hair and a silver firearm.
- Officer Brian Doherty, listening to the district radio in plain clothes, encountered the defendant on a street one block from the robbery site about seven minutes after the first dispatch; it was dark and raining and the defendant was the only person visible.
- Doherty stopped the defendant, performed a patfrisk and found $432; Sergeant (then Lieutenant) Dwan arrived, felt a hard object in the defendant’s backpack, opened it, and saw a silver firearm; Officer Lopez had canvassed nearby streets but did not communicate relevant observations to Doherty prior to the stop.
- Defendant was arrested and indicted on multiple firearms offenses; he moved to suppress evidence from the stop and the identification; the motion judge denied the motion; the Appeals Court affirmed; the Supreme Judicial Court granted further review.
- Central legal question: whether, under art. 14 of the Massachusetts Declaration of Rights, the horizontal collective-knowledge doctrine permits imputing other officers’ information (including uncommunicated facts) to the officer who effectuated the stop in determining reasonable suspicion.
Issues:
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether horizontal collective knowledge may be aggregated to justify a Terry stop under art. 14 | Commonwealth: collective knowledge may be imputed when officers cooperate; acting officer need not personally know every fact | Privette: aggregation without communication undermines art. 14 and the exclusionary rule; horizontal doctrine should be rejected | Court: horizontal aggregation is permissible only when officers are engaged in a joint investigation with a mutual objective and are in close, continuous communication about that objective; acting officer must know some critical facts or be in communication with those who do |
| Whether Dwan's and Lopez's knowledge could be imputed to Doherty in this case | Commonwealth: imputing both officers’ observations supports reasonable suspicion | Privette: no sufficient communication to impute their knowledge; at minimum Lopez’s observations were not communicated | Court: Dwan’s knowledge (including facial-hair description and that he saw no one on Morrissey Blvd.) could be imputed; Lopez’s knowledge could not because there is no record he communicated prior to the stop |
| Whether Doherty had reasonable suspicion to stop the defendant absent any imputed facts | Commonwealth: defendant matched broadcast description and was found minutes from scene along reported flight path as the only person outside | Privette: the match was too general and other discrepancies (clothing, height) negate reasonable suspicion | Court: even without imputing the facial-hair detail, the totality (timing, proximity, matching physical characteristics, defendant being the only person outside) gave Doherty reasonable suspicion |
Key Cases Cited
- Terry v. Ohio, 392 U.S. 1 (1968) (establishes reasonable-suspicion standard for limited stops and frisks)
- United States v. Hensley, 469 U.S. 221 (1985) (fellow-officer rule permits reliance on bulletins/communications from other officers)
- Whiteley v. Warden, 401 U.S. 560 (1971) (endorses imputing the collective knowledge of an organization in certain arrest contexts)
- United States v. Massenburg, 654 F.3d 480 (4th Cir. 2011) (criticizes broad horizontal aggregation; urges communication requirement)
- Commonwealth v. Mendez, 476 Mass. 512 (2017) (Massachusetts precedent imputing another officer's uncommunicated knowledge where officers cooperated)
- Commonwealth v. Roland R., 448 Mass. 278 (2007) (treats knowledge of officers in a joint pursuit as common knowledge for reasonable-suspicion analysis)