I am trying really hard to buy into the cultural relativism idea and it works for a lot of things...like the way people drive around here, the idea that personal space doesn't exist here, the lower sanitary standards, etc. We spend a lot of time telling our kids "It's not wrong, it's just different".
But bigotry? Sorry, I don't buy it. Racism "used" to be culturally acceptable in the U.S. too. And although it is far from over I thank God I don't live in the era of the Jim Crow laws.