A rash of new "knockout game" incidents, in which teens assault strangers with the goal of knocking them out in one punch, have surfaced in recent weeks.
Community leaders are calling for an end to the violence after teenagers in New York, New Jersey and Philadelphia have been caught on camera.
Their violent actions have led to hospitalizations, and even deaths.
Approaching strangers and knocking them to the ground with one punch to the face or head, the brutal violence is all in the name of a game called "Knockout."
The "game" has also spread to Massachusetts, Illinois and Missouri.
A woman was approached eight males on bikes last week when one reached out, punched her in the head and rode away, NBC's News4 reported.