Please, stop talking so general, if you want to state something, base it on details.
I was born in Iran, and although I'm not a muslim, I have a good knowledge of what Islam is, and what its supporters want, whether normal, moderate or extremist. Islam is not a religion that tends towards terrorism, in fact, there is no order to take lives in the whole Quran. There is only one condition that killing is allowed: when the other party is attacking your city, your people. This is literally Real Islam. What you see in extremist groups, is exactly what extremist groups of other religions and parties do, they forge their own interpretation, and talk about it like it is obvious. And the fact that terrorism has become so widely seen in muslim world, is because of the capital. The flow of capital, in an economy that is based on selling oil, and not production, leads to such actions. It is not like "he is producing something and getting wealth, I can do the same and be wealthy", it is like "he has the oil, he is reach, and he doesn't let me have it, so I should get it by force." and don't forget the constant humiliation the European countries and U.S. have towards muslims. Whatever they say, the overall view is similar to barbarian. It creates a lot of hate, anger. And the Europe and U.S. aren't that innocent in the crisis that we face in muslim world. They are a part of it, please study the history of Al-Qaida, ISIS, or any other terrorist group that you want, you can see how they have invested in it.
Besides all of it, what you say about muslims being silent on what is being done in the name of Islam is simply not right. Come to Iran, ask anybody, I'm pretty sure that you can't even find a single person who thinks ISIS or Al-qaida people are muslims. NOT A SINGLE PERSON. And the same goes in most of the muslim world: What you are considering your test group is not a fair test group, it is selected from a subset that live in U.S. or Europe, and also the ones that are bold enough to express their radical thoughts.
