I am writing an essay on Political Correctness currently, and striving to find a word fitting this description. I want to say that something wasn't nice, but it wasn't breaking the law. It wasn't legally wrong. But, in the sight of people around me, it was illegal, disallowed, inappropriate, taboo. But after then, I proceeded to say something else that was actually "legally illegal". What is a term that would replace the words in the quotation marks?
Here is an example:
It's recess, and there's joking everywhere. Then someone cracks a joke at someone else. Everyone laughs. The person whom the joke is against laughs as well, then shouts,"You Jew!" What he said was actually prosecutable. It was "legally illegal" I need a term/adjective fitting this description