I hate to break it to you but you absolutely dont. First of all, you are talking to me on an internet forum, which means you have access to internet, which is a privilege many people dont have. Second you know about chemical processes that are involved in human behavior, meaning you probably had some education. Meaning you are part of a small group of people who, an elite, who had the privilege to be educated, to read, and learned how to think. You have nothing in common with the average Muslim living in Afghanistan or Pakistan or Yemen or Sudan, where the average person is illiterate and relies on what others tell them. Yeah, you both call your God Allah, but thats where the similarities between you and the average middle eastern Muslim end.
You are in the same position as me when it comes to guessing what will happen if America would kill 10 million Muslims in a short period of time. And the difference between you and me is that I dont make any illusions about basic human nature when they feel their group comes under attack from another group. And no, that is not to shrug and look the other way.