Mind of an Assassin

If you think what happened at Virginia Tech is incomprehensible, you’re about to meet some people who understand that kind of madness very well: they're the people who protect the president of the United States.

For years, the U.S. Secret Service has sent psychologists into prisons and mental hospitals to interview those bent on assassination.

As Scott Pelley reports, their interviews bring extraordinary insight into the mind of an assassin; what has been discovered in the process is that many of the same characteristics found in assassins can also be found in school shooters.

In recent years, 60 Minutes has had unprecedented access to the Secret Service Intelligence Division.

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