I just had to stop by and say what a well written and thought out post @WG Townsman.
Personally, I tend to usually stay well clear subjects like this, even though I have very good friends and even family that are Americans, and have visited several times myself and plan to continue to do so in the future. It is a very touchy subject and at the end of the day I'm not a citizen so despite how many links I have and how much data/statistics I can read, there's still elements I'll always be missing as someone who isn't a citizen.
We've all got to admin, as Townsman alluded to there's certainly no "easy fix", and banning weapons won't suddenly make them disappear, the types that are willing to go out and do such atrocities won't really have a problem trying to acquire a weapon on the black market either. It's a really tough situation but I think both sides can agree something definitely needs to be done, what needs to be done unfortunately I think will get bogged down in red tape and legislation for many years to come either way and it's unfortunate that innocent victims will have to bear the brunt of that.