Beware the anti-PC Crusade, says the liberals

The liberals at university self-righteously express concern with people who are against PC. For those of you who don't know what PC is, it is political correctness. The anti-PC crusaders are fighting against PC because they believe PC shuts down debate. However, one can argue that these anti-anti-PC crusaders are the ones trying to shut down debate against them, while opening up more "debate" (read: indoctrinating propaganda) for themselves. How open-minded are the anti-anti-PC crusaders.