The “Knockout Game,” which involves randomly targeting pedestrians, and knocking them out, has been the cause of deaths in multiple U.S. cities including Syracuse, N.Y., St. Louis, Mo., and Hoboken, N.J.

The NYPD has put extra officers in a Brooklyn neighborhood where as many as eight people have been smacked or punched as part of a known trend that targets random victims, mostly white Jewish people, on the street.

In a September attack, Ralph Santiago, 46, of Hoboken, N.J. died after his head was slammed into an iron fence. The attack was caught on video and three were arrested. They were 13 and 14 years old.

Let’s stop this crazy game! ‘)}