The NYPD is investigating a series of attacks on Jews in Brooklyn which they speculate is part of a sick game called “Knock Out The Jew.”

Police have not officially connected the series of assaults but have released a video showing a group attacking a Jewish man. The video shows different angles of the man being beaten.

A witness told CBS New York that a gang beat his 12-year-old son while he was wearing traditional Jewish attire on a street. The gang then began to cheer, “we got him” as he fell to the ground after being repeatedly struck in the face.

Rabbi Yaacov Behrman said that the game is being played by gangs of African-American teens.

In addition to the assaults, several synagogues have been vandalized.

The NYPD’s Hate Crimes Task Force is investigating the attacks.