Around 11:30 p.m. on Jan. 12, 2020, officers with the Metropolitan Police Department’s Gun Recovery Unit (GRU) turned their unmarked Chevy Malibu onto a residential street in Washington, D.C., where they spotted Dalonta Crudup walking with a backpack slung around his shoulder. Crudup, a 23-year-old Black man, noticed the Malibu and shifted his backpack to both shoulders. According to a statement of probable cause, that was enough for the plainclothes GRU officers to jump out of their vehicle and stop Crudup. “You don’t got no weapons on you?” one officer asked Crudup. Crudup lifted his shirt...