Martial Law wouldn't be called 'Martial Law' per se.. It would be a National Guard action, not all that unlike what occurred during the Watts Riots in the '60's or the L.A. Riot in 92.. Recent Executive Orders have expanded 0bama's powers when it comes to domestic military actions, and even killing American citizens without oversight. And so on, and so on. I wish your Constitutional citing had relevance but not under this presidency, unfortunately.
Forgot to tell you that there were also U.S. ARMY and MARINES in the L.A. Riot zone in ‘92, providing ‘cover’ for police and firemen.