What characteristic is associated with a DOJ definition of a gang?

The characteristic of tattoos specific to a gang aligns with the Department of Justice (DOJ) definition of a gang because such markings serve as identifiable symbols that express affiliation and loyalty among members. Tattoos often signify commitment, reputation, and identity within the gang culture, making them recognizable indicators of membership. They play a crucial role in maintaining the gang's internal cohesion as well as external recognition by rival groups and law enforcement.

While the other options may describe various aspects of gang culture, the presence of tattoos as a defining characteristic directly relates to the representation and expression of gang identity as understood by the DOJ. External financial support, membership fees, and strict dress codes can vary significantly between different gangs and are not universally defining traits in the way that tattoos are. Thus, tattoos become a more definitive and recognizable characteristic associated with gang membership according to DOJ standards.