Comment by brohee

Datapoints :

https://en.wikipedia.org/wiki/Jallianwala_Bagh_massacre 400-1500 civilian deaths by 50 British soldiers armed with bolt action rifles (tried to get machine guns on site but thankfully couldn't)

https://en.wikipedia.org/wiki/Heinrich_Severloh Possibly single handedly killed an hard to estimate count of US soldier, but possibly in the hundreds (he had people supplying him ammunitions).

Crowds are just easy to thin with repeating firearms and a good supply of ammo...