There is little that a President can do to make people stop having illegitimate children, or pay attention in school, or stop doing drugs, or stop killing each other. These are personal decisions, made day after day and perpetuating 90% of "Blacks'" problems in our society. The other 10%, granted, is he result of private and institutionalized racism.
But his AG lends credence to the "It's not our FAULT!" crowd when he makes inflammatory comments and threats, and feeds the perception that, for example, the grand juries in St Louis and New York didn't do their jobs. It's pretty ******* bad when the chief law enforcement official in the country says, in effect, that the law enforcement system is screwing people of black African ancestry.