It's two sides of the same linguistic coin. The people policing language for trigger words are searching for safe spaces so they can be protected from ever being offended. The anti-PC crowd want a safe space where they can shout whatever they want. Blaming semantics and language is a way of avoiding conversation. As in "it's not an assault rifle. Get the precise terminology right or I won't continue the conversation." Or "Why won't Obama call it Islamic terrorism?"
We live in a post-factual world now. Facts do not matter. Rhetoric still does, though. It's why fascism is rising again.
But policing language, whether for PC or anti-PC purposes, is precisely the kind of Orwellian nonsense we've been warned about.
Thought crime is the next step. Like Trump or Gingrich wanting to deport/deny people based on ideology.