Saying "I'm not racist, youngster, but my generation is a bunch of asshole racists".is a big part of the problem.
I don't know anyone who is ingrained in the 50's era. My parents weren't racist, neither were my aunts and uncles. I'm in my forties, and I don't know ANYONE who is racist. But you have your experiences, I guess.
People in their 20's can be just as racist as anybody. Ask BLM.