I don’t see any “derangement syndrome” here. What I see is two trials of murderous white vigilantes that concluded about a week apart. In one of them, the vigilante got away with it and became a right-wing hero; in the other case, a trio of vigilantes very, very nearly got away with it – in fact, they very nearly succeeded in never getting charged at all.
The Jan 6 insurrection is a whole other story, but not a happy one, either.