Well, hell. . . ALL sentences are ambiguous! - not really, no.
If Trump had been caught saying 'I think white people are superior to black people', that would be an unambiguously racist statement. If Trump is or was a member of the KKK, then that would be unambiguous, too.
The evidence that supposedly shows Trump is a racist wouldn't stand up in a court of law.
He's been accused of being a sexual predator on the basis that he was caught saying 'some women will let rich guys get away with anything, grab their pussy, anything.' While what he said was obviously stupid, there needs to be actual evidence of him being a sexual predator if he really is one. Same applies to charges of racism.