I once had a conversation with my mother, who lives in another country. At that time, that country was governed by a far-right mini-Emperor-Orange, and I was bashing the guy, while she was defending him. When I said that the guy resembled Emperor Orange, she agreed and said that she even liked Emperor Orange. I told her, and I was being sincere, that if she ever repeated that in front of me, that would be the end for us. She was scared to the point that she took it back and promised to "think it better", which of course I did not expect her to do.
Our implicit agreement is as such. We talk, we have a relationship. If the subject of those people ever come up, in particular Emperor Orange, I will bash the heck out of him, of her, or anyone involved. Of course I accept being bashed as well for anything else. She has however not approached the subject since then.