The roots of mass murder

Charles Krauthammer: The roots of mass murder - The Washington Post
The irony is that over the last 30 years, the U.S. homicide rate has declined by 50 percent.
Gun murders as well.
We’re living not through an epidemic of gun violence but through a historic decline.
Except for these unfathomable mass murders.
But these are infinitely more difficult to prevent.
While law deters the rational, it has far less effect on the psychotic.
The best we can do is to try to detain them, disarm them and discourage “entertainment” that can intensify already murderous impulses.
But there’s a cost. Gun control impinges upon the Second Amendment; involuntary commitment impinges upon the liberty clause of the Fifth Amendment; curbing “entertainment” violence impinges upon First Amendment free speech.