Who gets to claim MLK?

I'm having two reactions to the back and forth between Clinton and Obama. The bad news is that it seems petty and I suspect that it irritates a lot of people and it takes time away from discussions about the important stuff, like the economy and healthcare. But the good news is, the top candidates are focusing on race, are virtually trying to out pander each other. Frankly, I'm thrilled to see non-white voters courted anytime, anywhere b/c they spend most of the time either being ignored or being demonized for political gain. So this is both annoying and refreshing at the same time. In other words, completely schizophrenic, like everything else about this political season.