The McCains snub Sarah Palin is such a low class and bitter move that to me speaks clearly about their character.
Sarah Palin has never been anything but gracious toward John McCain. After their election loss to Obama. There were numerous stories McCain campaign officials who blamed Palin for the loss but I can assure you, it wasn't her that lost that election. She actually fought the hardest to win it. McCains people took her for granted and used her for a scapegoat. Despite their rudeness, she never had a bad thing to say.
John McCain may have been a war hero but obviously things changed while he was in the Senate. I don't know if it was him or the people around him who made the decision to snub Sarah Palin. Telling her she was not welcome at his funeral is an incredibly classless move.