At first glance, this looks pretty similar to the Bob Lee murder last year. I find it interesting and a little surprising how different the reaction and coverage has been
This reminds me more of Chris Dorner. The manifesto is shorter, but this sense of injustice felt by the perpetrator is similar.
Back in the days, mainstream media had enough control over the narrative to water down the "manifesto" part and avoid copycats. This time, "rogue" social medias are much more prevalent, so there's not much of a barrier to prevent the perpetrator from becoming a hero. We can think that copycats will emerge.
I guess that billionaires around the world are dusting off their "apocalypse bunker" protocol...
And, in case we all need a reminder: Chris Dorner was an actual monster, and his brief casting as a cause celebre a pretty big embarrassment in retrospect.