Washington DC was/is a special case as it is designated as US Army Military District of Washington D.C.
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A cordon sanitaire, using the Washington Beltway as the barrier check point against outsiders joining the rioters in the city, manned by NG and local LEOs. DC Stadium was the mass arrest holding tank. Federal Airborne troops occupied the Federal Triangle and picket zone around the White House where APCs as well as jeeps with pintle mounted Ma Deuces...these remained beyond the four day shutdown. I was stranded on the Virginia side of the Potomac for that time. Watched the pillars of smoke rising from the windows of the office tower in Rosslyn. BTW the published casualties numbers were much less than the actual ones.