People just don't fully grasp how exhaustive and exceedingly ridiculous these redlining designations were. You'd have neighborhoods in Atlanta filled with black doctors, lawyers, businessmen, and professors marked red while areas around the steel and industrial cities of the midwest would get yellow and green designations based simply on the race of the residents as opposed to their actual likelihood to default on mortgages. Not to even mention how the federally backed banks like the Bank of Italy (now Bank of America) thrived under this system while black banks and businesses were completely handicapped in the market. And on top of that, federal and state governments would routinely bulldoze black neighborhoods for whatever "greater purpose" they thought would be better served. The dual process of creating centers of commerce all across America for white people while simultaneously destroying any chance of success for black people really did a number on the rest of America's perceptions of who black people are and what they are capable of.