I think that expressing one's emotions is perfectly appropriate here, and even further - it's ETHICAL. Those people are in need of serious help. For the most part, women in islamic societies are second-class citizens. Harris wants to help them, naturally, and expose flaws in Islam's doctrine, so emotions are clearly a very natural part of the process here. It's indeed a way to enhance the message, and there's a very good reason for it - the problems are real and they need to be addressed. I can see how you feel that it's like a propaganda flier, but really, think about what kind of a problem it is to all those people. Don't you think that's worth caring about? Don't you think that's worth writing about with passion and emotion? It's not like we should abandon emotions upon choosing reason as our banner.