Dude. They shot the wrong people. By accident.
Most fired over the heads of the charging mob. And hit targets in a parking lot up slope from their position.
And right there is what went wrong. They should have fired directly AT the targets in front of them - the ones that had been looting and rioting for days and throwing things at the trained armed killers pointing assault rifles at them.
By the time you bring out those kind of forces you must be ready to order them to shoot to kill if the mob doesn’t get the hint. Those people are not trained to scare the stupid into submission, they are trained to KILL TARGETS ON COMMAND and using them for anything less is like using C4 for fireworks on the 4th of July.