An autistic teen boy was ripped off a Manhattan train Friday and beaten by a group of strangers, video shows.

Video posted to social media Monday shows a woman wearing a Chicago Bulls sweatshirt dragging the unidentified teen off a northbound A train at the 181st Street-Fort Washington Avenue around 5:30 p.m. on Friday, according to police. The woman can be heard screaming “Get off!” as she holds the boys’ shirt and pulls him down the platform screaming “Walk! Walk!”

Video then shows the teen try to get back on the train before the unidentified woman pulls him off before another individual throws the first punch. Suddenly several people join in and pummel the teen. (RELATED: Student Knocks Out Teacher’s Aide Who Allegedly Took Away Video Game Console: Police)

A bystander is heard screaming “fight back” as the teen tries to hit back.

Authorities say the teen was punched repeatedly in the head and face which caused a “laceration to the victim’s lip.”

The mother of the victim, who wished to remain anonymous, said she won’t watch the video, according to ABC 7 NY.

“I refuse to watch that video,” the mother reportedly said. “Nobody wants to see their kid being assaulted.”

The mother said her son had gone out for the evening but was then alerted by police that he was in the hospital. She warned other parents to keep a close eye on their kids.

“Keep a close eye on them,” she reportedly said. “Because a lot of trouble could have been avoided had I done that.”