Dwayne McPherson, the man suspected of assaulting an elderly man in Manhattan on Sunday morning, was arrested. The incident comes in the midst of a series of unprovoked attacks in the Big Apple, including that of paramedic lieutenant Alison Russo-Elling, who was stabbed by a stranger in Queens. Retired NYPD Sergeant Johnny Núñez provides some tips that can help prevent a similar occurrence.
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