The crash happened just after 6:30 p.m. inside Commodore Barry Park at Flushing Avenue and Navy Street in the Fort Greene section of Brooklyn.
One officer used a flashlight to signal to the oncoming train while his partner helped pull the man to safety.
Hadasa Karavanibozak, 48, was charged with hate crime assault and reckless endangerment after the incident at Edmonds Playground in Fort Greene on November 7.
The victim, who is not Palestinian and is of Indian descent, was with his 18-month-old son, when a woman threw a cup of coffee in his face and accused him of supporting Hamas.
The child's mother is speaking out and vowing to hang on to some of the last words her son spoke to her.
A 7-year-old boy was struck and killed by an NYPD tow truck while crossing the street with his mother in Brooklyn.