From my perspective it stems from the whole double standard with regard to race. Say It Loud (I'm Black And I'm Proud) pretty much gets a pass and is praised as an affirmation of sorts. Yet imagine the outcry from liberals if a singer penned a song with the title of Say It Loud (I'm White And I'm Proud).
Alright, that’s sensible. I don’t see either as racist, but the double standard IS racist.