I disagree. It's for a very specific and designed reason. The destruction of the family. They started with the blacks with single motherhood and "war on drugs", majority of which is targeted to "help" blacks. A coincidence that it came after the civil rights movement, don't you think... A race that produces Obamas, Jordans, DeGrasse Tysons, etc is not incompetent or incapable.
Used to be these sorts of shortcut slogans came from the liberal left and the 60s and 70s were full of them. The far right slogans were crude and offensive. Now they are more sophisticated, hitting two birds with one stone, China and black "manipulation".