In LA back in 1992, it took them most of the week, the National Guard being deployed and then finally getting ammo, and THEN having the machinegunners shoot up the next few roadblock runners the following night for order to start coming back and LAPD began sortieing again.
Unfortunately one of the first things they tried a couple weeks later was going door to door to try to find some of the hardware the media had recorded. Most of it was safely away by then, thankfully.
The experience a friend of mine had was that the warehouse he worked at elected to stay open, so all the employees were bringing their boomsticks to work with them, not only to protect themselves during their commute to work but also to defend the business with if need be. They set a watch and the plan was that if any of the ruckus got close the watch was to advise and keep track about it and if badguys got closer than a predetermined distance only then would they "show teeth" and bounce some rounds downrange to make the outlaws scamper. Never came to that, the destruction halted two blocks away. Friend was an Army Ranger and a number of other employees were former infantry riflemen, so the thugs would have been in deep dookey if they'd tangled with that bunch.