An expert should be a credible proponent of the truth, and not an advocate for either the prosecution or the defense. Because of what we do and our...

Most gangs frown on a policy of open Jihad against the police. Their natural enemies are not the police but rival gangs. Traditionally, the police were more...

Web Extra: Read the National Gang Intelligence Center's Feb. 15 report on gang infiltration of law enforcement and corrections agencies.

Denial and minimization of a gang problem allows the city's criminal gangs to take root. It also thwarts proactive anti-gang measures.

Former Mexican Mafia leader Ramon "Mundo" Mendoza's motivation for writing, "Mexican Mafia: The Gang of Gangs," is to get the book into the hands of gang...

Sureños can be found in every major city in the U.S. They can be found in Canada, Mexico, Europe, and South America. The big transnational super gangs such...

A Nahuatl dictionary was intercepted in a prison in September 2000. It contains the code to the ancient Aztec language now being used by gang members. Break...

Sureños identify with the color blue and use tattoos with the number 13, sureño, sur, south sider, or "kanpol" (a word taken from the ancient Aztec language...

Jose "Bat" Marquez received a life sentence for trafficking methamphetamine from a prison cell. Most law enforcement officials would consider this a...

Art Romo's association with high powered La Eme members, his loyal service as a liaison to the drug cartels, his close association to Mexican Mafia lawyers,...