A old, but good piece on the culture war from 16 years ago is John Fonte's "Why There is a Culture War" (http://www.hoover.org/research/why-there-culture-war). First published in Policy Review, put out by that often marginalized bastion of Silicon Valley conservative thought, Stanford's Hoover Institute.

I didn't get the whole PC crowd until I read this article. The obvious contradictions in the PC movement can't really be ascribed to any other reasoning then Antonio Gramsci's counter-hegemonic culture war strategy that Fonte chronicles the history of in this article. The strategy seeks to join together all coalitions of those who oppose "hegemonic" values such as meritocracy and other "common sense" in order to seek its overthrow and to pave the way for a utopian revolution.

Edit: I left out any examples of PC contradictions because anyone with critical thinking skills can identify many easily and I wanted to be kind and not inflict hurtful cognitive dissonance on those who are still PC true believers.