On April 3rd, a woman named Nasim Aghdam entered YouTube’s main campus in San Bruno, California through a parking garage and opened fire, wounding three employees of the video-sharing platform before fatally shooting herself in the chest. Just hours before, Aghdam had been stopped by police in Mountain View.
Source: Gizmodo – Police Release Bodycam Footage of Encounter With Nasim Aghdam Hours Before YouTube Shooting