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The nitwit mayor's REAL goal is to get rid of federal law enforcement so his thugs can get back to destroying the city.
I'll bet the tear gas thing was staged... democrats and thugs are working hand in hand on this 'get out the terrified citizen vote (the 'make it stop, make it stop, make it stop ... vote)
Nothing is stopping them from destroying the rest of the city. The Feds are only involved in protecting the Court House, and their ROE is almost passive. A real defense would set up a militarized perimeter with serious weaponry, allowed to be used. "Don't come within 100 yards unless on official business."