The key to your statement is “morally opposed”.
You are probably morally opposed to many things members of the current administration do every day without a second thought.
Basically, if someone is evil, hypnosis can turn that evilness on.
And, yes, I have seen the crowd hypnosis demonstrations, and it is scary to see some acting without knowing why when given the trigger word.
Crowds of people applauding platitudes demontrates how shallow humans are, on the whole.