They hide their faces because they are cowards and ashamed of their actions. They know their families and friends would shun them.
Barry is fiddling.
Or the target of reprisals.
The DIRG: Dangerous Islamic Rage Zombies. That’s what 1,400 years of first-cousin inbreeding can do to a group of folks whose ideology is based on rewarding the worst men with rape, murder and plunder.