The real 'simple fact' is that criminals commit crimes, not potential weapons. Even when guns are restricted, criminals continue committing violent crimes that are no less heinous. It is an unassailable and proven fact that when licensed citizens carry, violent crime goes down.

Heres a clip from an article in the anti-gun Gotham News:

Bloomberg's Crusade
Hilly says that the most consistent leadership on gun issues comes from Bloomberg and Mayors Against Illegal Guns, the organization he formed with Boston Mayor Thomas Menino. The group boasts 340 mayors from across the country who want to stop the flow of illegal guns.

Bloomberg's push to rid New York City of illegal guns has seen results. The number of guns recovered from crime scenes in the city dropped by 13 percent from last year. The number of people shot to death dropped from 347 in 2007 to 292 in 2008. Overall, murders increased from 2007 to 2008, but only due to an increase in crimes committed with knives.