Yes I know TYT isn't everybody's favorite source but forget about them, I'm posting this for what they're reporting on, their conversation after the report isn't interesting and can just be ignored.
At certain times a gun can save lives. The video posted recently of an armed convenience store robber being taken down by armed customers comes to mind. When the bad guy is in clear view, the possibility of friendly fire casualties are low, and is focused on something other than killing you, then it works, but at all other times guns are either completely useless or going to get you killed, just as this guy realized. Even in the convenience store situation nobody was in danger, the guy came in for money, not to kill anybody.
The 2nd amendment as it stands give rights and freedoms, but it also takes away other rights and freedoms. I think the important thing is to find the balance between those freedoms - the freedom to bear arms and the freedom to pursue happiness, which you can't do when you're dead or your loved ones are in danger of soon being dead. This was a music festival in Vegas, I don't think you could fine a much more bening setting, yet people are dead and permanently wounded, and because of this, now all future large scale gatherings are at risk. Do we want to give up the right to enjoy concerts to keep our right to bear any and all arms?