While I agree that the video should have been included for consideration, I’m also not sold that that’s proof of intent.
For example, I’ve previously posted:
Do we consider that to be proof of prior intent, or just shit-talking?
Lots of people say lots of things that they likely wouldn’t do, and his actions on the evening where every person he shot was actively engaging him doesn’t suggest some great master plan to go on a shooting spree of looters.