Dana Milbank On PC As Straw Man

Although this does hint that PC isn't a problem, Milbank doesn't actually say that, and nothing he says comes close to entailing it.
It's absolutely true that some on the right use the term indiscriminately, to bash anything to their left.
And that's wrong and bad. It's bad inter alia because it strengthens PC by suggesting that mere liberalism is PC, thus helping recruit liberals to the PC cause.