Mealey's (July 15, 2021, 9:45 AM EDT) -- SYRACUSE, N.Y. — A use-of-force expert may testify on standard police policies and whether officers accused of using excessive force during an arrest deviated from those standards, but he may not opine on the reasonableness of the officers’ actions or their state of mind because that testimony would usurp the role of the jury, a federal magistrate judge in New York ruled July 1....