DC has very restrictive gu laws. If people showed up on the mall armed they would surely be mass arrests, and although they could not find a jail large enough to hold them all the fines would be severe.
Don’t get me wrong I like the idea, but I have a feeling the Army would meet us there it would be a trap.
Are you certain that the Army would enforce such an action?
Also, you assume that folks who would dare show up armed, would "let" themselves be arrested without trouble?
I think the bureaKaRATZ would find themselves outnumbered, pee their pants and "put off" mass arrests for "another day."
Don't get me wrong, they would take pictures and show up at people's houses one by one, like a good coward would.