> Most leftists despise their parents[sic] politics.
And do you have a source on that? Anecdotally, most "leftists" I know have left leaning parents. But it's up to the person to define if they are or are not "leftist", because it's a rather narrow, small minded world view that has to define things in those terms.
> None of this suggests a rightward leaning of the culprit himself.
Nor does it suggest his leftward leaning. Maybe it suggests why he used violence as a means to enact social change on the world.
Wow. If you haven't met folks who don't fit, or don't consider themselves aligned with the "left/right" spectrum of American politics, you're missing out. The "us vs. them" mentality is juvenile, and it is sad you subscribe to it.
If you cannot comprehend the shades of grey in the world, maybe you need more exposure to it.
Most leftists despise their parents politics. None of this suggests a rightward leaning of the culprit himself.