Between, lets suppose, (Homophic anti imperialist) vs (pro lgbt+ imperialist), a marxist will side against imperialism. You dont have to agree, you dont have to be a marxist. Im just telling you how it works. Of course this is a veeeeery abstract example, but i guess you get the ideal. And also

So you're suggesting we teach the conservatives about respect and tolerance and try to free them from the ideas their social cicle put in their brains

I think if dont do that you are helping the people who teached them to be the way they are