OpenAI said that in June it banned the account of Jesse Van Rootselaar, who is the suspected shooter in a mass killing in Tumbler Ridge, British Columbia, on Feb. 10. Eight months before the shooting, Van Rootselaar’s ChatGPT account was internally flagged after employees interpreted some posts as “an indication of potential real-world violence,” the Wall Street Journal reported.“Despite this detection system, after the name of the Tumbler Ridge perpetrator was released publicly, we discovered t...