They rip on stupid people, whoever they may be. There are plenty of them on "our side" and they definitly don't spare them. It's just, right now, there are a lot more stupid people (really obvious stupid people) on "the other side."
They have said, effectively, that it's both easier and more fun to rip on liberals right now. Therefore that's what they're doing.
Hence the term, " South Park Conservative." Of which I am one.
Ribald, offensive, mad, bad, and dangerous to know.
Oh yeah, and, I love Opie and Anthony too.
Given Michelle Malkin's extremely accurate description of the Left from her latest book, it's almost like dropping a grenade to kill the fish in the barrel. Parker and Stone clearly know how self-indulgent and nihilist the Hollywood Left is, and it's just too easy to make fun of them.