"The problem that we've got is we're trying like the dickens to treat the symptom without treating the disease," Mr. North said on "Fox News Sunday." "And the disease in this case isn't the Second Amendment. The disease is youngsters who are steeped in a culture of violence."
He said everything from violence on television to Ritalin, a drug used to treat Attention Deficit Hyperactivity Disorder, may be contributing to the problem.
"Nearly all of these perpetrators are male, and they're young teenagers in most cases, and they've come through a culture where violence is commonplace," Mr. North said. "All we need to do is turn on a TV, go to a movie. If you look at what has happened to the young people, many of these young boys have been on Ritalin since they were in kindergarten. Now, I am certainly not a doctor; I'm a Marine. But I can see those kinds of things happening."