Unless you hold more general opinions about "always being progressive". The left of 1950 are still just as left in 2014.

I doubt it. Marxists are Marxists, but I wonder how many of them were into gay marriage etc, in the 1950s.

So the only way for a position to be correct is for it to have been widely seen as right and important by a large group for a long time? Obviously the number of people interested in gay rights was smaller in the fifties than it is now.

Are you one of those moldbugian jackhats? This kind of simplistic thinking smacks of their pseudo-intellectualizing...

Correct IS "widely seen as right by a large group". People in the 1950s were not evil or stupid, they were much as people are now: well-meaning and sincere in their beliefs. Their correct is not our correct, but in context, it's not "worse" than ours. If you'd been an adult then, you'd have beliefs in tune with the zeitgeist too.

You are assuming that your views wouldn't change over time. Ideas aren't static. You said that one would end up being reactionary over time when the new ideas disagree with your own...but that assumes that yours wouldn't change...

You are assuming that the positions held by the left are held solely to undermine status quo...some parts of the status quo aren't discriminatory.

Do you really think that's what progressivism is?

A conservative believes things are good because they are old. A progressive believes things are good because they are new. Neither is correct.

That's a cliché and a bad one at that. Progressives don't see value only in "new-ness"...that's just plain stupid.