No leader has unilateral control to unleash the full force of the military on their own citizenry. Imagine what would happen if POTUS tried to order a nuclear strike, or even aerial bombing, on an American city? The Joint Chiefs would almost certainly arrest him immediately. Ordering soldiers to fire on their fellow citizens drastically raises the probability of outright mutiny. This is true even in the most oppressive regimes. Even the Nazis were genuinely scared of average German citizens turning on them for perceived abuses.[3]
[1]https://en.wikipedia.org/wiki/Egyptian_revolution_of_2011 [2]https://en.wikipedia.org/wiki/No-go_area [3]https://en.wikipedia.org/wiki/Battle_of_the_Netherlands#The_...
None of the no-go areas sound like historical examples you would want to follow unless you like anarchy. They are messy pro-longed conflicts unlike eg Euromaidan.