I think it's an attempt at intimidation. I wonder if any of those whose addresses were published are immediate family members of federal officials or employees, and covered by 18 USC Section 119, which prohibits publishing home addresses for intimidation. Or if the internet publication of home addresses of gun owners can be considered cyber stalking, cyber-bullying, harassment or invasion of privacy under state laws? Just because the information is available under a FOIA request, does that mean it can be publicly disseminated? I'm sure they checked with their lawyers and felt like they were on safe ground, but I hope somebody sues them.
The paper says the publication was in response to Newtown. But the map only published handgun owners, since there is no permit required for rifles and shotguns in New York (except for New York City.) Does the person own 1 handgun or 50? The map doesn't tell you. It doesn't even tell you if the person owns a firearm, only that he/she has a permit to own one. I don't see any connection between Newtown and handgun permits in Westchester County.
Several states, especially in the West, including Colorado, don't require licenses for handguns or any other firearms - except for concealed carry. Arizona and Wyoming don't even require permits for concealed firearms. Just another reason we should leave firearm laws up to the states. One size doesn't fit all. And we certainly don't need a federal law creating a national database of gun owners.