I don't see that happening, quite yet. But here's what I do see happening. Flying PC flags at institutions will become acceptable alternatives to flying the American flag. That's already started, and it will accelerate. Rainbow flags? Sure! Mexican flags? Sure!
Gadsden flags (Don't Tread on Me)? Err...no. Not politically correct. Represents micro-aggression, and all that.
See what has happened to the ‘English flag’ and the feeling about the ‘Union Jack’ in the UK. Same thing happening here.