It was rush hour, but no one could leave the parking garage. Activists from ADAPT, a national disability rights group, hurled their wheelchairs and their bodies in front of AARP employees’ cars so they couldn’t leave. Someone spotted an opening. “You! There,” said one protester to another in a wheelchair, who then launched himself in front of a car, stopping the employee from driving away.
Roughly 200 ADAPT activists last Tuesday surrounded the Washington, D.C. headquarters of AARP,...