Leftists like Kamala Harris want us to believe that white supremacism is a major threat to America. What about black supremacism? To Harris and the left, it's a myth, and worrying about it is racist. Daniel Greenfield at FrontPage has the details on Harris' quest to render black supremacism a non-concept and to bar the Department of Justice from preventing terrorism by black supremacists: Two years ago, Senator Kamala Harris,