“The cops follow orders of the Mayor and other city leaders and the last they thing they wanted to do is retreat.”
Right...
The first thing cops in big liberal cities do when confronted by a mob is save their own sweet asses first. Protecting citizens is way down the list. Minneapolis is a rerun of LA in 1992.
You have a few choices with a mob:
release a massive cloud of tear gas, multiple water cannons , or “whiff of the grape”.
Of course killing “unarmed” rioters is political suicide
And then there’s letting the rioters destroy and loot until their exhausted.