A heartless New York City man was arrested for punching and stabbing a woman at the World Trade Center Memorial, according to cops.
The incident unfolded around 2 a.m. Friday, when Amir Thompson is accused of approaching the 57-year-old woman in the plaza on the corner of Liberty and West streets in Lower Manhattan.
“I know you from somewhere,” Thompson, 23, allegedly seethed at the victim before punching her, then knifing her in the right cheek and shoulder, according to a police source…