What defines a group of three or more persons acting in criminal activity with a common symbol?

A group of three or more persons engaging in criminal activity under a common symbol is best defined as a Criminal Street Gang. This term captures the essence of a collective that not only participates in illegal activities but also identifies with specific symbols, names, and behaviors that set them apart. Criminal street gangs often have structured leadership and a defined set of expectations for members, which further cements their identity as a group focused primarily on illicit activities.

In contrast, other choices like Organized Crime Group typically refer to larger, more structured organizations involved in a wider range of criminal enterprises that may not necessarily revolve around a common symbol. Street Performance Crew and Community Defense Team do not fit the context of criminal activity as directly as a Criminal Street Gang does, making the latter the most accurate choice in this scenario.