Why Isn't McCain Condemning The Racism Coming From His Supporters?!

Do you see why I would never entertain voting for John McCain? He has not come out & criticized his supporters for saying this type of stuff. "Bomb Obama" is the chant of one crazed McCain supporter! While all this is going on, my guess is that McCain will stay silent on this. He doesn't want to lose any support. Even if he has to create a further divide in the country to do it! This behavior must be something that McCain finds tolerable. He sure knew how to speak out about racism when it involved John Lewis. Where's his irritation & anger now?