My father was a racist, and one night at the dinner table, he would not relent, I was in grade 11 and my brother was in grade 8, had had enough
he went on a racist tangent, as he had before and my brother and I left the table and said we would not eat at the dinner table until it stopped.  We took our plates to the living room.  From that night on for many nights my dad seldom spoke of anything, but sadly in the long run, he did not change, we did return to the table and have conversations that became acceptable.