News Boulder gunman’s sister-in-law upset he was ‘playing’ with gun, took it away two days before rampage, cops say March 24, 2021
News Chicago gunman who allegedly killed 3, wounded 4, posted bizarre videos before rampage: reports January 11, 2021
News Video shows Capitol Police officer being crushed during crowd rampage, howling in pain January 9, 2021
News Vienna terror attack suspect posed with AK-47 rifle, handgun, machete in chilling photo before deadly rampage November 3, 2020