Deranged Islamic belt bombers

Bodies of what appeared to be executed civilians were found in a ravine outside a besieged Philippine city on Sunday as a six-day occupation by Islamist rebels resisting a military onslaught took a more sinister turn.
The eight dead men, most of them shot in the head and some with hands tied behind their backs, were laborers who were stopped by Islamic State-linked militants on the outskirts of Marawi City while trying to flee clashes, according to police.

They need  some of that diversity  training.