Perhaps I should have said "usually" when I said ".... live happily together".
I work every day with people who view the world differently than I, everybody does. In fact it's very hard to get even two people to completely agree on anything, but life goes on.

With respect to the Holocaust, I was taught at school that the Germans made soap from dead Jews, to me this was a fact.
In April 1990, professor Yehuda Bauer of Israel's Hebrew University, regarded as a leading Holocaust historian, as well as Shmuel Krakowski, archives director of Israel's Yad Vashem Holocaust center, confirmed that the human soap story is not true.
Fact, once more becomes fiction.
But it doesn't matter, the Holocaust is still a tragic reality, even if some reported events are not.