What does "stacking" refer to in gang culture?

In gang culture, the term "stacking" refers specifically to the practice of flashing gang signs with their hands. This action is a form of communication among gang members, serving as a way to identify affiliation with a particular gang, convey messages, or assert dominance. Hand signs can vary significantly between different gangs and can play a critical role in gang identity and communication.

While wearing colors or symbols associated with a gang represents affiliation, and identifying territories is crucial for asserting control and influence, the unique practice of using hand signals—often referred to as "stacking"—is distinct in its function and cultural significance. Engaging in criminal activities, while often associated with gang involvement, does not directly relate to the specific term "stacking." Therefore, the correct interpretation of the term is focused on the visual and communicative aspect of gang culture, making it a language of sorts among gang members.