With rights come responsibilities. People tend, generally, I think to be very concerned about keeping their rights, but not so much about fulfilling their responsibilities.
People want to vote but they don't want people who vote against them to vote. People believe their lives are worth defending but they don't want others to have guns to defend themselves with because those guns might get turned against them. People believe in free speech but want to prevent propaganda, and as a result can't.
The more regulated people become because of public irresponsibility, the more paranoid people become over losing their rights while all around them a similar growing paranoia wants to take those rights away. This action reaction happens in one dimension, never addressing the base issue of what is happening to people's sense of personal responsibility. The first thing that happens to people who have nothing and feel something was taken away is to feel they own nothing to others and will shoot them at the drop of a hat. Anything can be used to pay some stranger back for one's own personal misery, but it is that sickness in the case of guns pulls the trigger.
Show me the person who does not feel like a victim and I can show you a person who, armed or not, is a person you can trust. Show me then, almost everybody, and I can show you a person who under certain conditions will find any means at their disposal to kill you. Our fear of feeling our self hate makes us dangerous because there is always some chance it will be triggered. Mileage varies.