Which gang is known to be paramilitary in structure?

The correct answer is based on the understanding of gang structures and their operational methods. The Texas Syndicate and the Texas Mexican Mafia both exhibit characteristics of a paramilitary organization, which typically includes a hierarchical structure, discipline, and a focus on gaining control over territory and illicit activities.

The Texas Syndicate, which originated in Texas prisons, has a well-defined chain of command and operates much like a military unit, emphasizing loyalty and obedience among its members. Similarly, the Texas Mexican Mafia also maintains a military-style structure, focusing on strategic control within and outside of prison environments, and seeking to exert influence over other gangs.

In contrast, while the Aryan Brotherhood is also known for its organized structure and has violent aspects, it is not primarily associated with the same regional identity and operational style as the Texas-based gangs. Therefore, the choice that includes both the Texas Syndicate and the Texas Mexican Mafia accurately reflects the paramilitary nature of these organizations.