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No one hates a particular religious group quite like the people whose own religion is 99.9% identical to theirs (e.g. Catholic vs. Protestant)
I'm ont so sure about that. I think the dominant religion hate the miorities in history. Catholics did war on Jews, Protestants, Jews again and now they cannot stand Islam.
I just think clerical and political elites are afraid "the other" are coming for them. In other words this is racism.