The people who are attacking schools, mosques, churches, and synagogues are not a "militia".
They're lone wolf terrorists inspired by known online terrorist groups.
And because the "media" won't tell the public this and most people are too stupid to figure it out on their own, the terrorists are winning.
The terrorists want civilians disarmed because it makes easier targets.
The terrorists don't care if they themselves can't get guns, they'll just switch to bombs (again).
@Render
So, what is/are the root problem(s)?
I walk it back to our culture.
We have a group that is primitive and has not developed sufficient empathy or comprehension of the value of community.
The US culture edifies the strong loner.
The weapons are accelerants in that equation.
@Render
I think social media is also an accelerant.
People are not born as racists nor angry.
At some point they tip into these dispositions.
In 200 years we'll have a better way to raise citizens so that the culture is more optimal. In the meantime we'll bicker about the overt topics and lock into ideological corners.