The rational subjects might want to be armed, but the rational ruling class forbids it. And the rational ruling class, desiring a disarmed subject class, isn't about to let this crisis go to waste. I'll give 10:1 odds that any call for gun control modifications will be to tighten them.
Then there is the matter of what fraction of the people living in NYC are rational. Look who has been elected mayor, and before this communist, there was gun-grabbing Bloomberg. What I'm implying is that a majority of NYC'ers may WANT to be disarmed as a matter of criminal law.
Sounds par for the course in NYC. So NYC residents will be treated to more stringent gun control (as if it can get more stringent than it already is), coupled with the spectacle of the NYPD conducting its business in armored personnel carriers.