I watched 16 minutes of the livestream. I'm not sure if that's the complete video or not but it was fucked up. The fact that this is the first time a killer livestreamed it is insane. 5 minutes of it was him driving.
It's interesting from a psychological perspective of what makes people break so much to do something like this. Theres so much outrage about this from people in the community related to The Great Cowabunga (ie: civil war in the US) and someone made a great point about how people who shitpost about that constantly don't realize that that's how it's going to be and they need to prepare themselves for that mentally if it happens.