The Chicagoist gets it wrong.

The Chicagoist has this piece that was written just before the SCOTUS opinion in McDonald v Chicago.

"The City of Chicago is preparing for today's ruling from the Supreme Court of the United States on the handgun ban as the court issues its opinion on McDonald v. City of Chicago. (The city of Oak Park also has its handgun ban at issue with the case.)"

Chicago just has a mind set of it's own. They don't get it, this case goes beyond Chicago and beyond Oak Park. The Supreme Court is not ruling, "Chicago can't ban guns." or "Oak Park can't ban guns." This ruling goes against every gun ban in every city and every State. When they opined that the 2nd is incorporated as against the States, that incorporates the definition given in Heller.

"c. Meaning of the Operative Clause. Putting all of
these textual elements together, we find that they guarantee
the individual right to possess and carry weapons in
case of confrontation."-D.C. v. Heller