That way, by murdering them first, they get to loot the house and personal belongings before anybody else finds out.
Sounds a lot like how the Commies and the Cubans operate...except with a sword in hand.
"All Moslems live in fear that the neighbors will detect some deviation in their adherence to the various heathen ceremonies required by their local mullahs and then kill them for it.
That way, by murdering them first, they get to loot the house and personal belongings before anybody else finds out."
Perhaps these people need to grow a pair and join forces with the Civilized World before they get caught up in the battle.
It these people that you speak of prefer to cower in the shadows, don't blame US when they become collateral damage.