zlacker

They can't; even the not free societies - think prisons - are not safe. People that want to do Bad Things will do them. Even if they didn't have guns or weapons, they could've - for example - get enough people into a dinner party or restaurant, have everyone grab a fork, and start stabbing people in the eye.

Terrorism doesn't need weaponry. The only deterrent would be to read people's minds, and you've probably watched Minority Report and other such dystopian scenarios. It's something that needs to be solved at the root, and TBF I don't believe it can be fixed.

>>Cthulh+(OP)
I'm a bit more optimistic, I think it can be fixed but it will take many years (decades).

>>Cthulh+(OP)

  Terrorism doesn't need weaponry. 

Indeed. Even if you deem well-coordinated attacks with just edged weapons (like the fictional ones in "The Following") unlikely, note that the Multiple-Victim public homicide with the most fatalities in US history used not a single firearm.

(and I'm not talking about 9/11, although it could count as such as well)