We can not all live in peace. The Muslims are the fastest growing group of people on the planet. They do not want to live in peace with us and they never will. It's so hard to explain things to young people. On Star Trek, the Borg went through the galaxy destroying civilizations. They believed that they were the only ones that should exist. Assimilate or die. Forced assimilation by one group on all others is the only way this world could live in peace, all nations would be one. The problem is that it would be forced and which group do you think should decide that their way is best?