I see where you're coming from, but I tend to think we're entering a permissive phase really. Things like marijuana and gay marriage aber becoming much more accepted. The "dark age" were the 80s and 90s, IMO.
I wouldn't be surprised to see that reaction against Obama engenders a backlash so severe that it totally destroys at least all forms of cultural liberalness formulated post-1968.
that may be possible, but i think most of the backlash has been based on fears about Obama enabling expensive and intrusive government against the middle class. I don't think the "culture war"issues are as salient as they were with Clinton in the 90s.