The rebellion may be from within D.C. rather than from without. The people who live in the city are sick and tired of being fodder for any illegally armed criminal. They want the right to protect their property and their lives just like the rest of us have the right to do.
Outsiders won't sway the council, but insiders who vote for them will. If SCOTUS upholds the gun ban, there should be marching in the streets and a message sent loud and clear to the council.
But there won’t be.