I have read elsewhere that the shooter was viewed as "very conservative" by people in his school. There was an anecdote about a class he was in that as an exercise one day stood in specific areas depending on their opinions about various political questions, and that the shooter was always on the conservative side, and fairly often alone there.

I have also read that he had said a lot about Epstein and that he may have felt he was ridding the world of some of Epstein's influence or some such.

I do not have actual evidence for any of the above, of course.

I was tempted to start the conspiracy theory that it was a false flag operation just to get sympathy for Trump, but I found out I was way too late on that.