Criminalizes participation in criminal street gang.

This bill makes it a fourth-degree crime to knowingly and actively participate in a criminal street gang while helping members commit specific violent offenses like robbery, assault, arson, or kidnapping. It defines a "criminal street gang" as three or more people linked by indicators (e.g., tattoos, clothing, or prior gang-related crimes within five years) and requiring prior commission of listed offenses. Violators face up to 18 months in jail or a $10,000 fine. The law applies directly to individuals actively involved in gang activities that promote or assist in these crimes.