Events. Events in response to other events. Think about it. Nothing since the big bang has happened without a reason. And even the big bang might have come from something, because of something. One thing makes another thing, and then that thing makes the next thing. Look at these kids. These two brothers, still kids. They don't know themselves yet. They are acting in response, in reaction, passionate reaction to something that set them off, made them commit to violence. They would not be here if the United States had not invaded Iraq in 2003. The United States would not have had fertile ground for the lie it told about Irag, weapons of mass destruction, Saddam Hussein, etc., etc., if not for Osama bin Laden and 9/11. Osama bin Laden would not have been able to recruit those men to learn how to fly planes and then crash them into buildings if not for propaganda about the persecution of the global Muslims, Afghanistan after the Russian invasion, Chechnya in the nineties, Bosnian genocides, or any instance of Islam under attack by the West, one culture trying to extinguish another. History is always a story of cause and effect.