"The Path to Violence" tells the story of a powerfully effective Secret Service program — the Safe School Initiative — that’s helped schools detect problem behavior in advance.

But despite the progress made, recent attacks have revealed a gaping hole in our safety net. Adam Lanza, Jared Loughner and allegedly James Holmes all executed their attacks after they’d left their respective schools. Here parents may be the only line of defense — parents who are terrified of their own children.

Can the hard-won gains made by psychologists and law enforcement be extended to the families of some of the nation’s most violent individuals? Is the country ready to have a national conversation about the balance between safety and civil liberties that such interventions would require? (Source: PBS)