Criminal defense attorney Brian Wagnera former Senior Prosecutor for the District Attorney’s Office in Brooklyn, discussed the October 31, 2017 New York city terrorist shooting, how investigators proceed in criminal investigations, and the use of social media by criminals.

<p>Criminal defense attorney Brian Wagnera former Senior Prosecutor for the District Attorney&rsquo;s Office in Brooklyn, discussed the October 31, 2017 New York city terrorist shooting, how investigators proceed in criminal investigations, and the use of social media by criminals.</p>

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