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PBS News Hour
What motivated the mail bomb suspect?
Now that a Florida man has been arrested and charged in the series of mail bombs over the past week, we turn to considering his motives. What do we know about the relationship between ideological extremism and violent behavior? And how does social media play in? Judy Woodruff talks with Mary McCord, former acting assistant attorney general, and J.M. Berger, author of "Extremism,” for analysis.
