Michelle Obama blew off Carter's funeral and now she will miss Trump's inauguration. Low class petty moves or no?

you mean michael

Big Mike is so low class it's hard to tell if he's doing this out of spite. Or, if it's just regularly scheduled big Mike indifference and generalized contempt.

Well, the inauguration I understand.
She is a first class lady, so she probably had a good reason to miss the funeral.