Here's some real world experience concerning the right to have guns. I was a prosecutor in Florida shortly after they instituted their "Right to Carry" law back in the early 1990's.
After the law went into effect, the gun-related crimes went down measurably. And in the several years that I prosecuted cases down there, I only had one case involving a person with a carry permit committing a crime with his gun...and guess who it was? It was a local lawyer who got drunk in a bar and started flashing his 44 Magnum to everybody.
Unfortunately the "powers that be" wouldn't let me give him jail time and he got a pretrial diversion with substance abuse counseling.