Unsure. Depends on how long it takes the Guard to get into place. It very well could get out of hand quickly depending on the time it takes to get additional forces on scene for containment. You also have to remember how close Washington is to Baltimore. And I guarantee you they don't want anything spilling over that far. Or outside "help" coming in.
One thing is for certain, patrol routes and coverage be damned, if I was the Chief I wouldn't have any officers out there in groups of less than four right now.