You can focus on either the last 8 years or the last 50 years. But the evidence is conclusive: Democratic policies have impoverished blacks and reduced them to second class citizens by every measure. Democrats fight intiatives like charter schools and school choice that would actually help blacks get a decent education. They push affirmative action programs that destroy black achievment. They push the line that all blacks' problems are caused by an inherently racist white society, allowing blacks an excuse for their poor performance.
What else?
What else?