The U.S. Department of Justice is investigating the Buffalo shooting as a hate crime. National Security expert Juliette Kayyem discusses how people are radicalized online and sometimes become mass shooters.
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15-Year-Old Detained In Seattle Food Festival Shooting That Left 3 Dead...
A 15-year-old has been detained following a deadly shootout at the Bite of Seattle food festival that left three people dead and several others wounded.
