I am not in NYC but I did catch this show today and the book referenced on the show can be can be looked up on glock the book.com
OK If you get a chance to watch the replay of a man named Paul Barrett who hosted a show in Brooklyn NY no less (Book Court) Book tv.org date was 1/10/12 C-SPAN2. GLOCK "The Rise of the American Gun" This guy works as the Assistant Manager editor of Bloomberg Business Week. I think this reaction maybe a direct reaction to the attacks on Synagogues last year.
After watching this peice I think Mayor Bloomberg may just have watched a copy of and may understand J.P.F.O's "NO GUNS FOR JEWS" If you find out anything in your area , it would be very interesting to see what could come from this in NYC and New Jersey both.