How much have white Americans benefited from slavery and its legacy?

Many people are talking about the Ta-Nehisi Coates essay on slavery and reparations.  Ezra Klein has a summary of the argument, which runs as follows: What Coates shows is that white America has, for hundreds of years, used deadly force, racist laws, biased courts and housing segregation to wrest the power of compound interest for […]
via Marginal REVOLUTION
How much have white Americans benefited from slavery and its legacy?