Within reason of course. But I agree. This isn't shooting peaceful protesters at a Vietnam or civil rights march. This was to quell the disorder. And it's worth noting that just because the vehicle has a machine gun on it doesn't mean they were indiscriminately mowing down crowds. I have no way of knowing but it may well be the machine gun wasn't even in commission. It would take a pretty significant top-down order to open fire with a machine gun I'm quite sure