The suspect allegedly told prosecutors he identifies as an involuntarily celibate, and was targeting couples when he opened fire at an Arizona mall.
It's now illegal to buy, sell, transport, import, or use many assault-style weapons in Canada.
AR-15s will be among the guns banned in the wake of Canada's deadliest mass shooting, but an expert said the policy has big loopholes.
An aide tried to pull him away, but he stayed with it.
The largest study of mass shooters ever funded by the U.S. government reveals stunning information about perpetrators.
For every person killed by guns in America, another two are injured or incapacitated, according to new research from Everytown for Gun Safety.
The Christchurch shooting laid bare the growing global threat of white nationalist terror.
Concern over the movie grew over a summer of mass shootings.
Facebook’s 350-person counterterrorism team is retraining its tools for far-right meme culture.
The gunman's mother told the police eight years ago that her son was talking about dying in a shootout and had threatened to kill her.
Cops found an AK-47 and a 12-gauge shotgun in her bedroom.