At least 30 Philadelphia cops injured during riots over police shooting of Walter Wallace

At least 30 Philadelphia cops were injured by early Tuesday as violent mobs torched squad cars and charged lines of officers in a night of carnage sparked by the police shooting of a knife-wielding man. Organized protests gathered at a park chanting “Black lives matter” soon after news broke of the 4 p.m. death of 27-year-old Walter Wallace, who was shot by police after refusing to drop a knife.-- More...