John Filippidis, silver-haired family man, business owner, employer and taxpayer, is also licensed to carry a concealed firearm. He’d rather he didn’t feel the need, “but things aren’t like they used to be. The break-ins, the burglaries, all the crime. And I carry cash a lot of the time. I’m constantly going to the bank. “I wanted to be able to defend my family, my household and the ground I’m standing on. But I’m not looking for any trouble.” Filippidis keeps his gun — a palm-sized Kel-Tec .38 semiautomatic, barely larger than a smartphone in a protective case — in...