Video shows NYC father with young son pulling knife on subway rider

Footage released by the NYPD shows a man who was with his young son threatening a subway rider with a knife. CBS New York’s Lisa Rozner reporting. Subscribe to the CBS News Channel HERE: Watch CBSN live HERE: Follow CBS News on Instagram HERE: Like CBS News on Facebook HERE: Follow CBS News on Twitter HERE: Get the latest news and best in original reporting from CBS News delivered to your inbox. Subscribe to newsletters HERE: