Honestly it is such a clear cut case for the legitimate use of force as I can imagine. My uninformed non-professional law enforcement advice would be something along the lines of giving the order:
"Disperse or be shot. 10 seconds". Count to 10. Shoot and arrest whoever is still there 1 second later.If the actual professionals have a more effective tactic that will cause less harm and loss of life, fine, but if that tactic leaves a mob such as this in place for even an hour longer, let alone night after night, then that tactic is doing actual damage to the real rights and safety of those living and working (!) in the immediate surroundings, as well as to the wider community at large. Ya know what happens when you depend upon tear gas to disperse a mob? They move their mob and destruction to another location! There's video on Facebook of the screaming mob running from where they were being tear gassed, to another QuikTrip down the road, which had nothing to do with the original 'cause', but was being overrun and looted!
This prolonged rioting and looting is doing real damage to the safety and security of the entire area and to credibility of the police who are the representatives of law and order for all, and as such it is absolutely unacceptable to allow it continue one moment longer.
To concern yourself with the self-esteem or safety of the rioters, at all, rather than with the people who live in that community, and those surrounding it, who are losing sleep, work, businesses and even forcing children to stay home from school day after day, if your first concern is not with those who are being forced to survive under such a blatant and direct threat to their peace, security and safety which such mob violence poses... well, that is as disgusting a display of ignorance as our modern educational system can boast of.