I think a lot of people have a warped view of political correctness. They view it as something Orwellian that prevents you from expressing your opinion and limits your freedom of expression. When political correctness is just a way of avoiding the negative connotations of words and phrases ('Black people' instead of 'negroes', 'gay' instead of '******', etc.) there's nothing wrong with it. I don't think it's unreasonable for people to expect not to have to be subjected to needless abuse in the interests of free speech, which is really just an excuse to fragment society.
The only issue is where political correctness stifles proper debate. Other than things which threaten the fabric of our society by inciting violence and division, nothing with a political motive should be censored, even if those views are not in accordance with the status quo.
I don't hate political correctness. In fact, I'm more frustrated with the people who think political correctness is some draconian gag on free speech, when really it's not. It's just a means to promote unity within society without compromising freedom of expression and tolerance for other people's views.