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 USA) would have been in real trouble as far-out left-wing extremists for some of the things they believe in, just a couple of generations ago.

That's assuming that, if they'd been alive then, they'd actually have been against slavery, racism, anti semitism, and the other kind of things John P mentioned...