That comes straight from the Obama administration - equal rights for black voters cannot be achieved without the Democrat Party.
Here's the scenario. Voters in Kinston, North Carolina decided that they wanted to get rid of party affiliations for candidates in local elections ... positions like City Council and Mayor. Then along comes Barack Obama's Justice Department. The imperial federal government swoops in to save a small town from its own sovereign ignorance! The Justice Department overruled the voters, decided that partisan were needed in this town so that black voters can get their candidates elected. In this case, black "candidates of choice" were identified by the Justice Department as Democrats. Apparently the Justice Department believes that white voters will only vote for black candidates if they are Democrats. So you get rid of the party affiliations and all of the sudden this is a violation of black voters' right to elect candidates they want!
Bear in mind that this is the same Justice Department that dropped the case against the Black Panthers who were intimidating voters at a voting precinct in Pennsylvania during the election.