DAVE KOPEL: Guns, Mental Illness and Newtown. We have fewer shootings, but more shootings by crazed shooters. “In the mid-1960s, many of the killings would have been prevented because the severely mentally ill would have been confined and cared for in a state institution. But today, while government at most every level has bloated over the past half-century, mental-health treatment has been decimated. . . . People who are serious about preventing the next Newtown should embrace much greater funding for mental health, strong laws for civil commitment of the violently mentally ill—and stop kidding themselves that pretend gun-free zones will stop killers.”