wut did he do
Being typical Jim Acosta, ignoring when it was no longer his time to speak, trying to ask questions over other people, and wouldn't give up the mic, holding a white house staffer back from taking it from him.
People are (mostly jokingly) saying he assaulted her, which he obviously did not, but it's good his pass was revoked, you don't get to be a cunt just because you're part of the press.