On the edge of America's last frontier, Alaska's Crips battle for domination in a city packed with drugs, money, and guns. Anchorage is the largest city in the largest state in America-- and a haven for rebels and outsiders.

An examination of Klu Klux Klan Gangs. The Imperial Klans of America are the new sons of the KKK. Their feet are planted firmly in the hate-filled history of the Klan, and their eyes are fixed on the 21st century.

Trinitarios" is one of New York City's most violent and fastest rising street gangs. With their reach spreading into neighboring New Jersey and beyond, these machete-welding Latino gangsters are now battling older, more established gangs.

The U.S.- Mexican border is fast becoming a war zone, and Barrio Azteca wants to rule all action along the Rio Grande. Born in the notorious Texas prison system, Barrio Azteca has evolved into one of the largest and most violent gangs in the state.

The Windy City blows coldest when murder ravages its poorest streets: mess with the Four Corner Hustlers from Chicago and you may die. The West side of America's 3rd largest city is home turf of one of the most infamous black street gangs in the U.S.

Their rap music is encrypted with messages of murder. They are Top 6, South Florida's most bloodthirsty gang, who began as a rap group and transformed into a savage crew.

For over 50 years the Hells Angels have reigned as America's largest and most deadly motorcycle gang. When the Angels sought to expand their empire across the border, they looked north for a booming hub of drugs and prostitution.

The Aryan Circle is a violent white separatist gang terrorizing the state of Texas. Its members are spilling blood, drugs and mayhem onto the streets. The A.C. was originally formed to survive in hostile state prisons, but the gang quickly rose to power as one of the most ruthless cliques in the system.

The Fresno Bulldogs have been running in the streets of Fresno, California for three decades. The Bulldogs are the largest, toughest and most violent gang in the central valley. This is the riveting story of how the Bulldogs rose to the top of the heap by shooting and stabbing anyone who stood in their way, from rivals to law enforcement.

Evil Breed chronicles the rise of the outlaw motorcycle gang The Breed, who earned their violent reputation through beatings and threats of murder. Under the leadership of John "Junior" Napoli, The Breed set their sights on the Philadelphia drug trade, taking over and using violence and intimidation to build a multi-million-dollar methamphetamine empire.

Brown Pride is the newest and most dangerous Hispanic street gang in Nashville, Tennessee. Their love of guns and chaos has struck fear into the hearts of the residents of the Music City and started a brutal turf war with their rivals. The gang freely admits to being "trigger-happy." In less than a decade Brown Pride has grown to become one of Nashville's most lethal criminal organizations.