The most disconcerting thing about this murder is that it seems like the killer was relatively normal beyond being excessively involved in online politics. In many of these things there's fairly obvious symptoms of major mental illness, or at the minimum it's some guy who's basically way down out in life. This was a young seemingly smart guy who just decided to throw his life away, and murder somebody else, probably as a result of spending way too much time in online circle jerks.