Eric Harris and Dylan Klebold
The Christchurch massacre was built on existing far-right memes that fueled a live-streaming gunman's viral aspirations.
The girls posted photos on social media re-enacting poses from the day in 1999 that two teens killed 13 people before taking their own lives.
The next attorney general said the problem is wayward souls -- and Hollywood, the internet, video games and Marilyn Manson.
Sue Klebold's talk is a must-watch for parents.