re: "Stop blaming black parents for underachieving kids"

In the USA, Blacks have had illiteracy rates about 8x higher than whites, dating back to the 19th century. Black educational attainment has never even approached white educational attainment. It was shameful in the late 19th century. It was shameful in the mid 20th century. It's shameful today.

I wonder if someone can pinpoint when exactly the problem became lazy parents.