Everybody Knows

A horrible massacre in Maine—who could have seen it coming?

Everybody. 

The Army did. The Maine killer was a reservist whose behavior exhibited mental illness of a dangerous kind: He had assaulted friends and colleagues, gave voice to delusions of persecution, and had been remanded to a psychiatric hospital. The Army handed down its judgment, that he “should not have a weapon, handle ammunition, and not participate in live fire activity.” And then the Army washed its hands of the matter, save for being sure to point out that the...