THE BRAND.(cracking the prison gangs)

On a cold, damp December morning in 2002, after weeks of secret planning, the United States Marshals launched one of the most unusual dragnets in the organization's two-hundred-and-fifteen-year history. As the fog lifted on a small stretch of land in the northwesternmost corner of California--a sparsely populated area known primarily for its towering redwoods--nearly a dozen agents, draped in black fatigues and bulletproof vests, and armed with assault rifles and walkie-talkies, gathered in a fleet of cars. The agents sped past a town with a single post office and a mom-and-pop store, and headed deep into the forest until they arrived at a colossal compound, a maze of buildings surrounded by swirling razor wire and an electrified fence that was lethal to the touch. A gate opened and, as guards looked down with rifles from beneath watchtowers, the convoy rolled inside. The agents jumped out.

After entering one of the buildings and walking down a long corridor lined with surveillance cameras, the officers reached their destination: a fortified cellblock in the heart of Pelican Bay, California's most notorious prison. They could hear inmates moving in their ten-by-twelve, windowless cement cells. Pelican Bay housed more than three thousand inmates, men who were considered too violent for any other state prison and had, in the parlance of correctional officers, "earned their way in." But the men on the cellblock, which was known as the Hole, were considered so dangerous that they had been segregated from this already segregated population.

Four prisoners were ordered to remove their gold jumpsuits and slide them through a tray slot. While some officers searched their belongings, others, using flashlights, peered through holes in the steel doors to examine the inmates' ears, nostrils, and anal cavities. To make sure that the prisoners had no weapons "keistered" inside them, the guards instructed them to bend down three times; if they refused, the guards would know that they were afraid to puncture their intestines with a shank. Once the search was complete, the inmates were shackled and escorted to a nearby landing strip, where they were loaded onto an unmarked airplane.

All across the country, agents were fanning out to prisons. They seized a fifth inmate from a maximum-security prison in Concord, New Hampshire. They took another from a jail in Sacramento, California. Then they approached the Administrative Maximum Prison, in Florence, Colorado, a "supermax" encircled by snow-covered ravines and renowned as "the Alcatraz of the Rockies." There, in the most secure federal penitentiary in the country--a place that housed Ted Kaczynski, the Unabomber, and Ramzi Yousef, the man behind the bombing of the World Trade Center, in 1993--agents apprehended four inmates who were allegedly responsible for more than a dozen prison murders.

Before long, the marshals had rounded up twenty-nine inmates--all of whom were among the most feared men in the American prison system. One had strangled an inmate with his bare hands; another had poisoned a fellow-prisoner. A man nicknamed the Beast was thought to have ordered an attack on an inmate who had shoved him during a basketball game; the inmate was subsequently stabbed seventy-one times and his eye was gouged out.

Then there was Barry Mills, who was known as the Baron. Soft-spoken and intense, with a gleaming bald head, he was described by one of his former prosecutors as a "cunning, calculating killer." He liked to crochet in his cell and, according to authorities, compose lists of enemies to kill. In a previous court case, he testified that "we live . . . in a different society than you do. There is justified violence in our society. I'm here to tell you that. I'm here to tell all you that." He was not, he conceded, "a peaceful man," and "if you disrespect me or one of my friends, I will readily and to the very best of my ability engage you in a full combat mode. That's what I'm about." Once, at a maximum-security prison in Georgia, Mills was found guilty of luring an inmate into a bathroom stall and nearly decapitating him with a knife.

Along with the Baron and the other prisoners, five women on the outside were also seized, as well as three ex-cons and a former prison guard. Most of those apprehended--there were forty in total--were transported on a Boeing 727, with their legs and arms shackled to their seats, while guards patrolled the aisles, their rifles sealed in compartments out of arm's reach. Days later, the prisoners ended up in a Los Angeles courtroom, where they were accused of being members of an elaborate criminal conspiracy directed by the Aryan Brotherhood, or the Brand. Authorities had once dismissed the Aryan Brotherhood as a fringe white-supremacist gang; now, however, they concluded that what prisoners had claimed for decades was true--namely, that the gang's hundred or so members, all convicted felons, had gradually taken control of large parts of the nation's maximum-security prisons, ruling over thousands of inmates and transforming themselves into a powerful criminal organization.