Note that the vermin committed the attack on a workday morning.
They knew the folks at Mass would be the aged priest, nuns and a few old women.
No chance of encountering any steelworkers, farmers, fishermen or other
blue collar workers who might stomp the living shit out of them.
Their main misjudgement was on the speed of the police response.
Happily the cops did not try to “arrest” them but permanently arrested
them.
You are absolutely right. People who go to mass on a weekday morning are not the type who can defend themselves.