I read his manifesto. It's concerning. I know he's not the only one /pol/ack to have a mentality like this, and his manifesto expressed relatable to any /pol/ regular arguments with strong personal appeal and motivating others to follow suit, so I know there will eventually be some copycats. Now, shootings happen so often I don't think most would care, but here's the problem: he was motivated to finally take this up by ISIS killings of innocents. His own killings are definitely going to inspire others, and those will probably inspire some lefty or Muslim guy to respond with same act. This could be a birth of a new violent cycle that will culminate with a motherfucking race war. Its going to be like watching one of those Dwarf Fortress tantrum spirals unravel irl, except way less entertaining and way more tragic.