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. Taylor Ware, a former Marine and aspiring college student, walked the grassy grounds of an interstate rest stop trying to shake the voices in his head. After Ware ran from an officer, he was attacked by a police dog, jolted by a stun gun, pinned on the ground and injected with a sedative.