Because if you work hard, show up, and do a good job, people hire you. The young ones speak Standard English after a few years in the US, not Hisbonics after two centuries. I have to wonder where the dearth of opportunity hides. I can't find it. Blacks today have advantages that would have turned the Irish and Italian immigrants bright purple with envy.
Education is compulsory.
Welfare provides a breathing space for study. Blacks get affirmative action in just about everything. If American universities bent farther over backwards to accommodate blacks who didn't measure up, much less any who might, they'd be limbo dancers. Oh, the heart-rending unfairness of it all. My soul curdles.