How to convince a person with extreme thoughts?

Extremists like to get to the bottom of things, and it's hard to convince such people:

1. Don't be too direct when persuading her. You'd better turn around and let her know that your real purpose is to convince her.

If you want to know what she thinks (ask her or her friends), it's best to make her feel that your thoughts are in sync with hers and that you can understand her feelings, so that she won't resist your persuasion.

When you find that she resists you, you'd better not say anything, but wait a while.

Good luck!