A deaf woman fell onto the subway tracks in New York City after she was hit in the head by a homeless man who had been arrested for sucker-punching another victim just four days earlier. Xing Zhou, 59, was on her way to church when a man hit her in the head at 10am Sunday morning at Manhattan's Union Square subway station. She lost her balance during the attack and fell onto the tracks. Two bystanders helped Zhou off the tracks and waited with her until help arrived. She was taken to the hospital and given medication for her pain....