To the left, America (once you get 50 kilometers away from any major coastal population center) is always and will be forever Mississippi in 1954.
The Baby Boomer obsession with race goes back to the sixties. Everything boomers did in the sixties was subsequently discredited. Spitting on Vietnam war veterans… not cool. Sexual revolution… that’s how we got AIDS and broken families. Maoism?… not even the Chinese are into it. The Soviet Union collapsed and it turned out the counter-culture had been rooting for the losing team the whole time. Hippie culture? Reduced to mockery. But, from the Boomer left’s perspective, “Hey, but we were right on civil rights (not really, but that’s another post) and we are going to rub civil rights and race in the faces of the next two generations so maybe they’ll forget about how we destroyed the cities, spit on soldiers, embraced communism, and unleashed AIDS.”
The Millennial obsession is a combination of emulating their “parents,” the end result of a lifetime of indoctrination of race-obsessed boomers in media and academia, and because boomers control the media, and the way for Millennials to advance is to suck up and play to their prejudices.