this was no ordinary act, it was a deliberate act of an extremist muslim inspired by ISIS.  there is no excuse for such terrorism and senseless killing.  the worldwide muslim community number into the multi-millions and these radicals are but a small part;. so why does not the non-radical muslims take control of the situation to banish their fellow extremists who will kill anyone, anytime for no good reason.  to merely express regret and sorrow after the terror is not sufficient.