gun permits go UP, and crime goes DOWN.
Also, technology helps a TON. police response times, dusting crime scenes and putting dudes away, more cameras, more cell phones catching things and a million other ways. I'd bet in most high end nations, crime is down since the 90s.
Used to be, you saw a crime, you walk to a payphone, call 911, a cop comes to your payphone, you tell him about the crime... he writes it down, files a report... someone has to type it up, they investigate... slow and inefficient. Today? you call from your cell and maybe take pics/video. Police arrive to your scene and maybe a traffic camera caught the dude leaving or even a small biz camera caught it happening. Info entered into laptop shows up everywhere insantly. Heck, the ability to "scan city for certain license plates" alone...