People have to come together and discuss ideas. Even when the ideas are wrong. We can agree on one thing, and disagree on another. Hopefully with good-faith discussions we can change minds and help people improve each-other's ideas.
What is not going to help is this weird, I DONT AGREE WITH THEM SO DON'T TALK TO THEM. Or, I don't agree with them, so don't talk NEAR them, or before and after them....
Life is far more complex and nuanced and just ostracising people based on their other views is not helpful. It's childlike, like in a playground when someone points at another child and goes 'EWWWW dont play with THEM' and then the whole group of kids runs away.'
We're adults, we are talking about complicated matters, we need to all be able to talk together, we need to be able to be wrong about certain things, and we need to be able to discuss everything.
We cannot simply ostracise people because we don't like their beliefs or opinions.