Sadly, a lot of what we see in the modern era is rooted in the left's racism. It's the same reason we now give everyone a participation trophy.
It's also why we aren't allowed to talk about blacks abusing jews in NYC for decades, but we can talk about neo-nazi whites.
We can't talk about blacks' treatment of far east asians in most of the US.
We can't talk about muslims murdering LGBTs and victims of rape.
Go back to the 1990s and listen to what Democrats said about these people. "Uncivilized", "unsocialized" "super predators" and countless other things. They still think that which is why they make excuses for the behavior. The only difference is that they no longer say the words. They still think that non-whites are sub-human, so they now make it so can't be held responsible for their actions. It's racist as fuck but they can't see it because liberals honestly believe they are helping the incapable ("deficients" as UK law calls the mentally disabled).
As I've pointed out in other threads, Charles Manson is a pioneering liberal. He wanted a race war because blacks were physically superior to white, while at the same time being mentally inferior to whites. Because of this, he thought blacks would win the race war, but would need him and his family to rule over them because they were/are too stupid. It's pretty much the justification liberals use for blacks who think for themselves. Liberals think that way about ALL minorities.