The mask came off in the last ten years or so.
Tendencies were always there, but it was basically hidden and kept out of sight (especially when a Black family member began to date a White chick).
I wrote a post on here years ago about how White Americans were basically embracing Black Americans as just Americans and not Black Americans, that racism towards Blacks was at it lowest ever, and people didn't care about skin colour... And then when guards were lowered and trust at its highest, the Black population collectively stabbed you all in the back, and they've shown themselves to be just as vile as the stereotypical White racist in the 20th.
What's just as bad? Black people who spoke out against this stupidity are considered persona non grata by their own friends, communities, and families ("Uncle Toms", "Oreos", et cetera).
The media and government covers up or doesn't report on Black-on-White or Black-on-Everyone Else crime, including murders, thefts, and rapes. And people are, ironically, noticing.
Now? Prejudice against Black people is on the rise, racism against them is spiking, and people who once didn't care about skin colour are now thinking, "hey, looks like my racist great-great grandfathers and grandmothers were right about Black people causing shit")... And idiots on the Left and in government are asking "why are the victimized population suddenly becoming more and more hostile towards the other part of the population who are raping, thieving from, and murdering them?".
Whites were basically brainwashed over the last half-century to lower their guards and accept people blindly, and now we're seeing the effects since everyone else was taught to hate and villainize Whites.