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Weekends with Alex Witt

Robot used to stop Dallas gunman

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MSNBC's law enforcement analyst, Jim Cavanaugh, talks about the robot used to detonate Dallas shooting suspect and the use of robotic machines for lethal force in the future.Jul.09.2016

Tragedy in Dallas

  • 'Old school' hack alarms Dallas alert system

    08:27
  • Police ambush killings on the rise

    04:09

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