What precisely are the protocols these days for non-native D C armed protective assignments ?
It is now a matter of record that the District will only selectively prosecute violators of its own firearms laws.
Ridicule is a great tool for the toppling of naked emperors. Mr. Mattera is using traditional techniques to educate folks about a serious problem.
On the larger question of the Second Amendment, the discussion was actually exquisitely framed almost 45 years ago by Dohrn, Ayers, etc when the progressives and left incited everyone to have firearms, and to resist government. I feel everyone should have the right to possess the same items and supplies which they did. If they now object, then they demonstrate that it is not