(#2) Miguel Treviño Morales
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In the brutal criminal underworld in Mexico, the most horrifically violent tactics are employed by Los Zetas. This cartel came from the Mexican border town of Nuevo Laredo, near Laredo, TX. The Zetas have been known to attack both other criminal cartel members and civilians on a massive scale.
After assuming control of the group in 2010, Miguel Treviño Morales orchestrated attacks that killed hundreds of people, including the 2011 San Fernando massacre and the 2011 Monterrey casino attack. The Zetas also publicly beheaded victims and displayed their bodies in prominent urban locations. Treviño Morales's personal favorite method of execution was known as "El Guiso" or "The Stew," in which a victim was forced into a 55-gallon drum, doused with gasoline, and set aflame.
Treviño Morales was hunted down and captured in 2013 by the Mexican military and the government of President Enrique Peña Nieto, who promised to crack down on groups like the Zetas. Treviño Morales's brother Omar was arrested in 2015, and the Zetas have essentially been reduced to a splinter organization operating on a much smaller scale than in their heyday.
(#7) Liborio Bellomo
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The New York Italian Mafia, the nation's most powerful arm of the American La Cosa Nostra, was greatly weakened in the 1990s. But more recently, a federal focus on terrorism has opened the door for a resurgence of this persistent criminal entity.
The oldest and most powerful of the five New York Mafia crime families has always been the "Genovese" clan, now said to be lead by Liborio "Big Barney" Bellomo. With 200 soldiers and a close-knit organization, Bellomo has fulfilled the promise of former Mafia boss, Vincent "The Chin" Gigante, who designated the younger man as his heir apparent as early as 1990. Bellomo made his name with such exploits as shooting and dumping a drug dealing turncoat into a LaGuardia Airport car trunk in 1991. Bellomo also proved to be a stand-up guy when he took a 12-year prison sentence from 1996 to 2008.
(#9) Javier Calle Serna Ran A Group Of Hitmen-Turned-Drug Traffickers
With the apprehension and breakup of Colombia's fearsome Cali cartel in the 1990s, new criminal gangs emerged to fill the South American cocaine trafficking void. The two most prominent Colombian criminal entities to emerge were Los Rastrojos and Norte del Valle, and these two groups were believed to work closely together under the supervision of two brothers, Javier and Luis Calle Serna.
Los Rastrojos was made up of former paramilitary hitmen, and it achieved its greatest influence in 2008, when Javier Calle Serna orchestrated the assassination of Wilber Varela, a prominent leader of the Norte del Valle cartel. Unfortunately for the leadership of Los Rastrojos, this put the them on the radar of international law enforcement, especially in the US. The eventual arrest of Los Rastrojos leadership, including both Calle Serna brothers, initially decimated the organization. But the subsequent light prison sentences negotiated by members of this group underlines the difficulty in prosecuting Colombian drug cartels.
(#5) Peter Ojeda Runs The Mexican Mafia From Behind Bars
The Mexican Mafia, or "La Eme," is a powerful force on both the streets of southern California and in the state's prison system. Its name is the result of its members' ethnic identity; the group did not originate in Mexico. Connected to the original founders of the syndicate, Peter Ojeda has managed to run the Orange County territory for over four decades – despite being behind bars in a federal penitentiary in Pennsylvania since 2006.
Nicknamed "Sana" (Spanish for "Fury"), Ojeda maintains control of Orange County and orchestrates violence, extortion, and narcotics trafficking. Ojeda's influence is considered so dangerous and pervasive that he was given an additional 15-year sentence in 2016, only months before his potential release.
(#12) Terry Adams Ran The UK's Notorious Clerkenwell Syndicate
Terry Adams once ran Britain's notorious Clerkenwell crime syndicate, known as "The Adams Family" or "The A-Team." This operation reached its peak around 2000, when it was associated with over 25 murders and connected to narcotics trafficking, gold heists, securities fraud, and extortion.
Adams and his brother Patrick have been successfully prosecuted, and both have served time in jail since the mid-2000s. A third brother, Tommy, believed to be responsible for the financial dealings of the gang, fled to Spain. Adams is under court order to pay more than £700,000 in back taxes and is believed to have concealed millions of ill-gotten gains in secret bank accounts.
(#4) Ismael Zambada García
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Following the apprehension of Joaquin "El Chapo" Guzman in 2016, Ismael "El Mayo" Zambada García assumed leadership of the fearsome Sinaloa crime cartel, the world's largest criminal entity. Unlike El Chapo and other cartel bosses who have been killed or imprisoned, Zambada is much more discreet and keeps a very low profile. Nevertheless, he has accumulated billions and involved his family in infiltrating legitimate businesses throughout Mexico. He is also directly responsible for supervising the massive export of cocaine and methamphetamine into the United States.
The Sinaloa cartel maintained power through the drug wars that have plagued Mexico since 2007, a conflict that has cost an estimated 100,000 lives.
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Nowadays, many terrorists wanted by the international police have advanced armed forces and are extremely difficult to arrest. These mobs are leaders from all over the world, the cruelest mob boss in the world was once bin Laden, who was confirmed dead. The term "base" has become a name used by almost all terrorist organizations to globalize terrorist activities.
They are not an organized army and do not coordinate their operations. More precisely, the mob leader came up with a strike plan, and then find other people to implement the operations. The random tool lists 12 of the most brutal mob bosses in modern history, their atrocities are definitely more cruel and bloody than the plots in mob TV or movies.
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