You would be surprised how a little riot will affect the electorate. The Blacks still just make up 13% of the population. Although the white majority has shrunk in percentage, the new Americans (legal and Illegal), don't owe the Blacks anything. I don't think they will appreciate their neighborhoods getting burned down.
What's the old saying - A Conservative is a Liberal who has been mugged?
I'd like to see a lot of Liberals get mugged over the next few months.