The article says the truck attack on Christmas shoppers in Berlin Germany was intentional. We'll have to wait to find out whether it was an attack by a follower of Islam.

But some  followers of Islam have tried to kill or have killed innocent, civilian, non believers in Europe, in Australia, in the U.S.A., in Canada and in many other countries around the world. And some  followers of Islam keep trying.

Why do some followers of Islam try to kill or kill innocent, civilian, non believers in many countries around the world? What leads them to target innocent, civilian, non believers?