I don't think racism or other bigotries will ever die, not until they evolve out and we will be long extinct before that happens. My exzmple is Ukraine, where after 70 years of Soviet repression of antisemitism—a human lifetime—it re-emerged as virulent as ever when the SU dissolved.
That's pretty robust.
I think bigotry is as inborn in humanity as religion and every bit as poisonous. I don't think it's just an unsavory social phenomenon that we can overcome with sensitivity training.
I mentioned rape and murder. I think these would both be more commonplace—a LOT more commonplace—without the consequences they bring. The consequences are largely missing from bigotry and my answer to this is not to seek to adjust language or educate people into tolerrance or, Christ, celebration of diversity but to hugely increase the consequences of behavior.
Sorry but I have no confidence in the adjustment of attitudes whether through adjustment of words or anything else. Laws and legal consequences are the only things that work and attitude adjustment will catch up in a few generations.
I realize how authoritarian and draconian this sounds, but a woman who wants to raise children and knows that a husband who raises bigoted kids will cost her those children won't marry a bigot. Bigots will be inhibited from passing their vile attitudes to future generations