It seems to me that New York City already behaves like the worst parts of the Wild West. Rather than lassoing some poor sucker and drag him through town behind a galloping horse, he just gets tossed in front of the subway. If you have the wrong color, you get pummeled by gangs or if you attend the wrong church, they will come after your congregation. And are the criminals punished? Nope. A wink of the legal eye and they are released while the lawmen are pretty much into “fuck it, who gives a damn” mode and hide at the local cantina, bodega or bagel shop.
Will there be blood spilled on the streets? probably and hopefully some imbecilic a-hole who did not get the memo after New Yorkers are finally carrying for self-defense. That kind of hemorrhage I do believe necessary till lessons are learned.