The Woman Who Plotted a Valentine's Mass Murder Shares How the Internet Radicalised Her
How a violent Tumblr meme sparked an online romance that almost ended with the worst mass killing in Canadian history.
A Columbine Parent Reflects on the Prospects for Gun Control
Tom Mauser lost his son in the massacre at the Colorado high school 16 years ago and has some ideas about how to go on after the shooting of two journalists on live TV in Virginia.
A Colorado Jury Will Need to Decide if the 'Dark Knight' Shooter Is Insane or Simply Evil
In 2012, James Holmes opened fire in an Aurora, Colorado movie theater, killing 12 people. But does he deserve to die?