LGF lists a good example of the "progressive left" in this comment by a Daily Kos moderator made while banning someone who doesn't agree with the far left extremist group think:
I’ve banned you because (5+ / 0-)
on your blog, you willfully promote pedophilia.
Well, actually, I don’t know if you do or don’t (since I never read your blog) but I figure until you’ve proven yourself not to be a pedophile — to my satisfaction, not yours — it’s fine for me to keep calling you that.
So much for reasoned debate from the socialists on the hard far extremist left.