Not buying it. They are certainly racial arsonists, but black animus toward whites and law enforcement certainly predates ObaMao and Holder, and it is a facet of a signficant part of current urban black culture.
I believe Obama's attitude that he can violate the constitution and law whenever he wants, sets a tone for the country, especially to those prone to lawlessness and criminality already, that it is okay to break the law if you don't agree with it. Holder is in contempt of Congress but has given them the big middle finger instead of being held accountable. These are the two top law enforcement and black leaders of this country for the last six years. They personally and professionally set an extremely poor example for citizens in the country to follow. But their words and behavior also encourages the black community that they can do the same thing and get away with it.