Interesting. On three fronts: A) The second amendment protects an individual right, B) The second amendment applies to the states, and C) The District of Columbia is a state.
Whew! What's next? Machine guns are arms? Licensing anyone is an infringement? Concealed or open carry is protected under "to bear arms"?
That's really about all they left out.
One other point: on pages 57 & 58, the court's opinion upon unreasonable restrictions placed upon Constitutional rights is established against the side of the government and, by extrapolation, may be extended to the unconstitutional CFR law and its unreasonable restrictions.