Why did more than 1,000 people die in the US after police subdued them with force that isn’t meant to kill?

By REESE DUNKLIN, RYAN J. FOLEY, JEFF MARTIN, JENNIFER McDERMOTT, HOLBROOK MOHR and JOHN SEEWER | Associated Press

Carl Grant, a Vietnam veteran with dementia, wandered out of a hospital room to charge a cellphone he imagined he had. When he wouldn’t sit still, the police officer escorting Grant body-slammed him, ricocheting the patient’s head off the floor.