Religious disagreements are as American as apple pie.
Wanting to exterminate people because they disagree with your particular brand of theology is neither American nor Christian.
Ditto for wanting to stop short of extermination and settling for driving them out of the country, marginalization, etc.
You alone determine which brand you subscribe to and God will be your judge. As for me, I will welcome anyone who will join me in fighting Satanic Marxists. No matter whether they call themselves Mormons, Jews, Evangelicals, Catholics, Buddhists or Muslims.
I have read a lot of these Mormonism debate threads, and I honestly don’t recall anyone talking about exterminations or expulsions. If you could kindly point me to a post or two that confirms this, I would appreciate it. Or if that’s not what you were saying, a clarification would be nice.
As for me, such a thought never entered my head, though both religious and secular history is full of examples of such things. But I haven’t run across such talk here. My gain, I guess.