You can skim the Wikipedia article I linked if you're actually interested in the (heavily researched) consequences of redlining, many of which happened up into the 2000s and all of which urbanists are still trying to mitigate today.
My reaction is literally one of confusion, not "performative hedging". The charitable read of most of the comments here is a profound lack of historical knowledge ("these areas were classified as hazardous, and the violence there is why white people left"), and an uncharitable one is thinly veiled racism ("minorities by definition are violent").