CNN roundtable: Sharpton 'covering himself' in Trayvon Martin news coverage

So long as there's a tragedy that smells a little bit like racism, you can count on Al Sharpton to be there. Lately Sharpton can be seen changing costumes for appearances at rallies, vigils, news interviews and on his own MSNBC TV show to talk about the killing of Trayvon Martin.

On CNN's "Reliable Sources" Sunday a few media critics called Sharpton out for it.