It will be interesting to see what kind of time he receives. The US justice system and media is insane. On one side of the political divide, bump into a fat lady who's part of a crazed mob attacking you and she has a heart attack, and you get huge media attention and 400 years. They'll even make her look thin! On the other, actively seek out and deliberately run someone over with you car, admitting to doing it for political reasons, you get bail, the media says nothing, and you get... we don't know yet.

Will also be interesting to see what the defense is. Will he plea insanity? If someone says they believe they were justified in murdering a member of the public because the news told them to, it suggests they might just go do it again. A sane system would seek to prevent this kind of thing happening.