makes one wish for the good old days when riot guns WERE riot guns, and when the riot act was read, you got the hell out of there or took your chances.
You hang around a riot and shit happens don't complain.To say there wasn't potential for the rioters to kill people accidentally or on purpose is to deny the reality of a riot. Heavy missiles are propelled without regard to consequences or with intent to break things, objects are set on fire, buildings and people are assaulted, vehicles are turned over, and so on. To deny the police have the moral, legal and ethical responsibility to stop that situation is to deny hundreds of years of common law, or are you prepared to define whose property can be destroyed, who can be hit with thrown objects, which news vehicles can be torched, whose cars can be turned over and/or torched while they are in them, etc.
To say (for example) she was drunk and celebrating and that should excuse the behaviour is specious, because you then have to excuse the drunk driver who gets drunk while celebrating and kills your family. You take part in dangerous activities and sometimes your number comes up.