CA1: Vertical collective knowledge applied; horizontal doesn’t have to be decided

Vertical collective knowledge clearly applies where an officer directed another to make a stop. Therefore, the bounds of horizontal collective knowledge doesn’t matter here. United States v. Balser, 2023 U.S. App. LEXIS 15060 (1st Cir. June 16, 2023) (a good explanation of both).

At the summary judgment stage, there were clear facts that the officer was reasonable in his belief for reasonable suspicion that a crime was occurring when he confronted plaintiff. “We may also consider ‘the availability of less intrusive alternatives to the force employed and whether warnings were given.’ … Whether the suspect poses a threat is ‘the most important single element.’ Smith v. City of Hemet, 394 F.3d 689, 702 (9th Cir. 2005) (en banc) (quotation omitted). We do not, however, consider these factors with clinical detachment. We must evaluate them appreciating that ‘police officers are often forced to make split-second judgments—in circumstances that are tense, uncertain, and rapidly evolving—about the amount of force that is necessary in a particular situation.’ Graham, 490 U.S. at 396-97.” Hopson v. Alexander, 2023 U.S. App. LEXIS 15033 (9th Cir. June 16, 2023).*

Defendant consented to entry of his home by the officer. United States v. Wasson, 2023 U.S. Dist. LEXIS 104834 (S.D. Tex. June 16, 2023).*

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