The United Nations.... ??? Puh-Leeeeze.
If the po-lice would be pulled back entirely, and IF city officials told all residents to take temporarily care of themselves and their neighbors for a couple days, and there was no antagonistic presence between the po-po and the protesters (they are bringing in outside cops, and the revelers are bringing in outside thugs) then this whole thing would start to defuse and there would eventually be a process to begin healing the rift. As long as there are borrowed cops in riot gear playing with their seldom-used toys, and angry citizens who are willing to go to the forefront, this will never have a civilized outcome.
You might ask, WHY pull back the police and tell residents to hunker down....
Remember the LA riots where Korean business owners made it very clear that nobody was going the phuckh with them or their stores or their families living in the neighborhood??? The looters and thugs and mobs just went away and a localized peace was accomplished with very little (if any) direct help from the Po-Lice.