I am reminded of the constitutional militia meeting back in the 90s, when we heard that the ATF was targeting a local Klan group with a deadly raid. What to do? We despised this bunch, but agreed that they didn't deserve to die in a "Waco Jim" Cavanaugh-directed deadly raid. Finally, one of our guys in the back of the room held up his hand and offered a suggestion. "Why don't we just show up five minutes late and avenge their deaths?"
On the other hand, with Bloomberg you might want to engage AQ immediately under the theory, "Hey! YOU don't get to shoot that liberty-stealing anal sphincter. Only WE are allowed to shoot that liberty-stealing anal sphincter."
For if Meddling Mike WAS saved by the intervention of the armed citizenry, does anyone believe he would change his opinion of us and stop his citizen disarmament efforts? I doubt it.