Silencing them won't make them change their minds.But some people's "opinion" is that certain people don't deserve to live or have basic rights, that they are lesser people by default. That "opinion" does not deserve respect and should be dismissed.
Can you provide specific examples?I really don't think that anyone who thinks that really understands what it's like to be hated for who they are. I've seen famous Christian leaders publicly announce that their followers should shoot and kill people like me for the crime of existing. Saying I should still respect him is dehumanizing, that his right to free speech outweighs my right to life and safety.