Mark Halperin of TIME interviews Robert Gibbs on Ayers. The key question: "Does Obama think it's ok to associate professionally with known terrorists?"
Gibbs is Obama's communications director so he's probably very good at what he does. But he fails to answer the question. I hope this is just a one-off thing and the campaign actually does have an answer because it's a fair question to ask.
In the service of his country, in trying to help raise money for schools, Obama joined a reputable philanthropic organisation, the Woods Fund of Chicago, and he felt it necessary to overlook the past of one of the members in order to get some important work done for the kids. It's a matter of what best serves the county.
UPDATE: Other Obama supporters are asking the same questions.