Your weapon would have been just fine.
As the lone Texas Ranger was heading off to stop a riot, he was asked why he was the only one going. His reply was that there was only one riot.
You fire off two rounds, two people hit the floor, the rest would be hauling tail.
No problem.
Only Jews rush a weapon as a group (Warsaw Ghetto), and crazy American soldiers (any war we fought in). Everybody else turns tail.
Identify the leader. Target him first.