The 1st sentence can be easily backed up by statistics about gun crimes.
The 2n part is purely speculative on my behalf but I'd dare say that's straightforward enough to conceive by noticing the word 'maybe', prominently placed at the beginning. ;)
I'd be curious to see your statistics. If they control for situations where two criminals have guns and are shooting at each other (i.e., they're actually about defensive gun use by the good guys) I'll be pretty shocked.
