Move over, Reverend Al. You're not the only MSNBC host who moonlights as a liberal activist. On today's Morning Joe, Mika Brzezinski announced that she will be not merely be covering a pay protest by fast-food workers in Detroit on August 29th--she'll be an active part of it. Joe Scarborough tried—in vain—to school Mika on Econ 101. But she did the equivalent of covering her ears and nattering "nah, nah, nah: can't hear you!" Scarborough said he'd be at the protest--on the sidelines, with a bullhorn. View the video here.