Pretty much every atrocity in history that I know of has included a framing of "we must defend ourselves against $evil_group, we have no choice, it's them or us". A framing of victimhood – whether real or not – and need of defence is always a big part of the justification of denying the rights, or even killing, of $evil_group. Maybe there are exceptions, but I'm not aware of them.

The right-wing persecution complex is not a new phenomenon. Bill O'Reilly and the likes were constantly going on about it in the 90s, and Jerry Falwell's "Moral Majority" – which more or less created the Christian Right – already had elements of it in the 80s. But this really takes things to a new level, and is at least potentially laying the groundwork for something rather ugly.