SA, this analogy does not work. A relationship between a professor and a student is a different one than that between regular people.

If I want to learn something I go to where it is taught.
And if I am quite happy with what I know, I do not expect anybody to change that.
If somebody feels the need to tell me something, then fine, if he does that with respect of my own beliefs. But that does not mean that I must adhere to what he has told me. And that has to be respected, on all sides.

As I said, if people would care more about what they do instead of others, all would be much better than what we are currently facing. I am not saying perfect, but better.