How do people learn tolerance? Can you teach tolerance?

I’m of the belief that the future of humanity depends on our ability to cooperate, and to live and let live. In order to do this, people have to learn to tolerate those who are quite different from them. A fundamentalist Christian can’t think that Muslims are the devil’s spawn, and vice versa. We have to tolerate different eating preferences, different education systems, different personal habits, and more. You get the idea.

I know that people learn tolerance, but I’m not sure how that happens. What I’m not sure about is whether tolerance can be taught. I hope this difference makes sense. Learning is something you do for yourself. Teaching is something you try to do to someone else. A teacher can’t force a learner to learn. The learner has to want to learn. Is it possible to get other people to want to learn tolerance?