The online dictionary says that political correctness is "demonstrating progressive ideals, esp by avoiding vocabulary that is considered offensive, discriminatory, or judgmental, esp concerning race and gender."

Which is simply somebody attempting a bit of damage control over a piece of ideological bullshit perpetrated by the American far right. You might as well try to put a positive spin on the concepts of "Negro sense of rhythm" or "Jewish greed".

There is no need EVER to use the phrase. Just bury it.