The thing is, most of the people who jump up and down raging about "liberals" (or the equivalent types - that particular word doesn't normally have those kind of implications outside the somewhat parochial USA) would have been in real trouble as far out left wing extremists for some of the things they belueve in, just a couple of generations ago.

That's assuming that if they'd been alive then they'd actually have been against repression of black people, and religious persecution, and the other kind of things John P mentioned...