I would guess that it’s generational. The moral leverage the original civil rights movement had over conscientious Americans expired with the Boomers. The next couple of generations have seen nothing but the empty rhetoric of posers like the Revs (Jackson, Sharpton, and Farrakhan) and aren’t goaded by any moral shortcomings. So they recognize the limp, enervated residual “movement” for what it is: milking a success long past its prime.
The next couple generations will be just as responsible (in the eyes of blacks) for slavery and the black plight. And, 50, 100 and more years from now, we’ll still be discussing this same never ending problem.
Yes, anyone after the Boomers is much less likely to suffer from “white guilt” syndrome, since we weren’t even alive when Jim Crow and segregation were going on. The more the race hustlers rail against imagined racism, the more young whites get indignant at the false accusations, since we know we have nothing to feel guilty for.
You may have something there. I was born during the era of Jim Crow, and though I wasn't directly impacted by that institutionalized suppression myself, I knew it to be all too real.
Consequently, people of my (boomer) generation had natural receptors to the messages of racial inequality and injustice from the sixties, forward.
Youngsters of today, on the other hand, have never personally witnessed institutionalized racism in any form. They've seen a lot of affirmative action and racial preferences employed, and have heard endless regurgitations about 'racism' from the Revs, et al, but in truth, have no observed evidence for such. Only the very weakest among them have fallen for such rhetoric.
Very good point.