the country. Its leaders, often working out of barren cells in solitary confinement, allegedly ordered scores of stabbings and murders. They killed rival gang members; they killed blacks and homosexuals and child molesters; they killed snitches; they killed people who stole their drugs, or owed them a few hundred dollars; they killed prison guards; they killed for hire and for free; they killed, most of all, in order to impose a culture of terror that would solidify their power. And, because the Brotherhood is far more cloistered than other gangs, it was able to operate largely with impunity for decades-and remain all but invisible to the outside world. “It is a true secret society,” Mark Hamm, a prison sociologist, told me.
For the first time, on August 28, 2002, that world cracked open. After more than a decade of trying to infiltrate the Brand’s operations, a relatively unknown Assistant United States Attorney from California named Gregory Jessner indicted virtually the entire suspected leadership of the gang. He had investigated hundreds of crimes linked to the gang; some were cold cases that reached back nearly forty years. In the indictment, which ran to a hundred and ten pages, Jessner charged Brand leaders with carrying out stabbings, strangulations, poisonings, contract hits, conspiracy to commit murder, extortion, robbery, and narcotics trafficking. The case, which was expected to go to trial in 2005, could lead to as many as twenty-three death-penalty convictions-more than any in American history.
One morning in 2003, I visited the United States Attorney’s office in downtown Los Angeles, where the prosecution was preparing to arraign the last of the forty defendants. As I waited in the lobby, a slender young man appeared in a gray suit. He had short brown hair, and he carried a folder under his arm as if he were a paralegal. Unlike the attorneys around him, he spoke in a soft, almost reticent voice. He introduced himself as Gregory Jessner.
“I’m forty-two,” he told me, as if he were often greeted with similar astonishment. “Believe it or not, I used to look much younger.” He reached into his pocket and revealed an old office I.D. He looked seventeen.
He led me back into his office, which had almost nothing on the walls and appeared to be decorated solely with boxes from the case, one stacked upon the other. On his desk were several black-and-white photographs, including one of an inmate who had been strangled by the gang.
“An Aryan brother went in his cell and tied a garrote around his neck,” Jessner said. He held out his hands, demonstrating, with tapered fingers, how an Aryan Brotherhood member had braided strips of a bedsheet into a noose. “This is a homicidal organization,” he said. “That’s what they do. They kill people.”
He was accustomed, he explained, to murder cases, but he had been shocked by the gang’s brutality. “I suspect they kill more than the Mafia,” he said. “They kill more than any single drug trafficker. There are a lot of gang-related deaths on the streets, but they are usually more disorganized and random.” He paused, as if calculating various numbers in his head. “I think they may be the most murderous criminal organization in the United States.”

There are hundreds of gangs in this country: the Crips, the Bloods, the Latin Dragons, the Dark Side Nation, the Lynch Mob. But the Aryan Brotherhood is one of the few gangs that were born in prison. In 1964, as the nation’s racial unrest spread into the penitentiaries, a clique of white inmates at San Quentin prison, in Marin County, California, began gathering in the yard. The men were mostly motorcycle bikers with long hair and handlebar mustaches; a few were neo-Nazis with tattoos of swastikas. Together, they decided to strike against the blacks, who were forming their own militant group, called the Black Guerrilla Family, under the influence of the celebrated prison leader George Jackson. Initially, the whites called themselves the Diamond Tooth Gang, and as they roamed the yard they were unmistakable: pieces of glass embedded in their teeth glinted in the sunlight.
Before long, they had merged with other whites at San Quentin to form a single band: the Aryan Brotherhood. While there had always been cliques in prison, known as “tips,” these men were now aligned by race and resorted to a kind of violence that had never been seen at San Quentin, a place that prisoners likened to “gladiator school.” All sides, including the Latino gangs La Nuestra Familia and the Mexican Mafia, attacked each other with homemade knives that were honed from light fixtures and radio parts, and hidden in mattresses, air vents, and drainpipes. “Everything was seen through the delusional lens of race-everything,” Edward Bunker, an inmate at the time, told me. (He went on to become a novelist, and appeared as Mr. Blue in “Reservoir Dogs.”)
Most prison gangs tried to recruit “fish,” the new and most vulnerable inmates. But according to interviews with former gang members-as well as thousands of pages of once classified F.B.I. reports, internal prison records, and court documents-the Aryan Brotherhood chose a radically different approach, soliciting only the most capable and violent. They were given a pledge:
An Aryan brother is without a care,
He walks where the weak and heartless won’t dare,
And if by chance he should stumble and lose control,
His brothers will be there, to help reach his goal,
For a worthy brother, no need is too great,
He need not but ask, fulfillment’s his fate.
For an Aryan brother, death holds no fear,
Vengeance will be his, through his brothers still here.
By 1975, the gang had expanded into most of California’s state prisons and was engaged in what authorities describe as a full-fledged race war. Dozens had already been slain when, that same year, a fish named Michael Thompson entered the system. A twenty-three-year-old white former high-school football star, he had been sentenced for helping to murder two drug dealers and burying their bodies in a lime-filled pit in a back yard. Six feet four and weighing nearly three hundred pounds, he was strong enough to break ordinary shackles. He had brown hair, which was parted in the middle, and hypnotic blue eyes. Despite the violent nature of his crime, he had no other convictions and, with a chance for parole in less than a decade, he initially kept to himself, barely aware of the different forces moving around him. “I was a fish with gills out to fucking here,” he later said.
Unaligned with any of the emerging gangs, he was conspicuous prey for roaming Hispanic and black groups, and several of them soon assaulted him in the yard at a prison in Tracy, California; later, he was sent to Folsom, which, along with San Quentin, was exploding with gang wars. On his first day there, he says, no one spoke to him until a leader of the Black Guerrilla Family, a trim, angular man in shorts and a T-shirt, began to taunt him, telling him to come to the yard “ready” the next day. That night in his cell, Thompson recalled, he looked frantically for a weapon; he broke a piece of steel off his cell door and began to file its edges. It was at least ten inches long, and he sharpened both sides. Before the cell doors opened and the guards searched him, he said, he knew he needed to hide the weapon. He took off his clothes and tried to insert it in his rectum. “I couldn’t,” he recalled. “I was too ashamed.” He tried again and again, until finally he succeeded.
The next morning in the yard, he could see the guards, the tips of their rifles glistening in the sun. The leader of the Black Guerrilla Family circled toward him, flashing a steel blade, and Thompson lay down, trying to extricate his weapon. Eventually, he got it and began to lunge violently at his foe; another gang member came at him and Thompson stabbed him, too. By the time the guards interceded, Thompson was covered in blood, and one of the members of the Black Guerrilla Family lay on the ground, near death.
Not long after this incident, several white convicts approached him in the yard. “They wanted me to join the Brand,” Thompson said. Initially, he hesitated, in part because of the gang’s racism, but he knew that the group offered more than protection. “It was like being let into a sanctuary,” he said. “You were instantly the man-the shot caller.”
To be accepted, according to Thompson and other gang members, each recruit had to “make his bones,” which often meant killing another inmate. (One recruit told authorities in a sworn statement that the rite was intended to “create a lasting bond to the A.B. and also prove that he had what it takes.”) Thompson also recited a “blood in, blood out” oath, in which he vowed not only that he would spill another’s blood to get in but also that he would never leave the gang unless his own blood was fatally spilled. While many new members had a probationary period, which often lasted as long as a year, Thompson, because of his physical strength and his ability with a knife, was voted into the gang almost immediately. He was “branded” with a homemade tattoo gun (which inmates made out of a beard trimmer sold at the commissary, a guitar string, a pen, and a needle stolen from the infirmary). Sometimes members were tattooed with the letters “A.B.” or the numerals 666, symbolizing the beast, a manifestation of evil in the Revelation of St. John. On Thompson’s left hand, just above one of his knuckles, he received the most recognizable symbol: a green shamrock. “All I had to do was show that ’rock and I was in charge,” he said.