10. Attila The Hun

Attila was Khan of the Huns from 434 until his death in 453. He was leader of the Hunnic Empire which stretched from Germany to the Ural River and from the Danube River to the Baltic Sea. In much of Western Europe, he is remembered as the epitome of cruelty and rapacity. An unsuccessful campaign in Persia was followed in 441 by an invasion of the Eastern Roman Empire, the success of which emboldened Attila to invade the West. He passed unhindered through Austria and Germany, across the Rhine into Gaul, plundering and devastating all in his path with a ferocity unparalleled in the records of barbarian invasions and compelling those he overcame to augment his mighty army. Attila drowned in his own blood on his wedding night.

9. Maximilien Robespierre

Maximilien Robespierre was a leader of the French revolution and it was his arguments that caused the revolutionary government to murder the king without a trial. In addition, Robespierre was one of the main driving forces behind the reign of terror, a 10 month post-revolutionary period in which mass executions were carried out. The Terror took the lives of between 18,500 to 40,000 people, with 1,900 being killed in the last month. Among people who were condemned by the revolutionary tribunals, about 8 percent were aristocrats, 6 percent clergy, 14 percent middle class, and 70 percent were workers or peasants accused of hoarding, evading the draft, desertion, rebellion, and other purported crimes.

In an act of coincidental justice, Robespierre was guillotined without a trial in 1794.

8. Ruhollah Khomeini

Ayatollah Khomeini was the religious leader of Iran from 1979 to 1989. In that time he implemented Sharia Law (Islamic religious law) with the Islamic dress code enforced for both men and women by Islamic Revolutionary Guards and other Islamic groups. Opposition to the religious rule of the clergy or Islam in general was often met with harsh punishments. In a talk at the Fayzieah School in Qom, August 30, 1979, Khomeini said:

“Those who are trying to bring corruption and destruction to our country in the name of democracy will be oppressed. They are worse than Bani-Ghorizeh Jews, and they must be hanged. We will oppress them by God’s order and God’s call to prayer.”

In the 1988 massacre of Iranian prisoners, following the People’s Mujahedin of Iran operation Forough-e Javidan against the Islamic Republic, Khomeini issued an order to judicial officials to judge every Iranian political prisoner and kill those who would not repent anti-regime activities. Many say that thousands were swiftly put to death inside the prisons. The suppressed memoirs of Grand Ayatollah Hossein-Ali Montazeri reportedly detail the execution of 30,000 political activists.

After eleven days in a hospital for an operation to stop internal bleeding, Khomeini died of cancer on Saturday, June 04, 1989, at the age of 86.

7. Idi Amin Dada

Idi Amin was an army officer and president of Uganda. He took power in a military coup in January 1971, deposing Milton Obote. His rule was characterized by human rights abuses, political repression, ethnic persecution, extra judicial killings and the expulsion of Indians from Uganda. The number of people killed as a result of his regime is unknown; estimates range from 80,000 to 500,000. On August 4, 1972, Amin issued a decree ordering the expulsion of the 60,000 Asians who were not Ugandan citizens (most of them held British passports). This was later amended to include all 80,000 Asians, with the exception of professionals, such as doctors, lawyers and teachers. Amin was eventually overthrown, but until his death, he held that Uganda needed him and he never expressed remorse for the abuses of his regime.

6. Leopold II of Belgium

Leopold II was King of Belgium from 1865-1909. With financial support from the government, Leopold created the Congo Free State, a private project undertaken to extract rubber and ivory in the Congo region of central Africa, which relied on forced labour and resulted in the deaths of approximately 3 million Congolese. The regime of the Congo Free State became one of the more infamous international scandals of the turn of the century. The area of land privately owned by the King was an area 76 times larger than Belgium, which he was free to rule as a personal domain through his private army, the Force Publique. Leopold’s rubber gatherers tortured, maimed and slaughtered until at the turn of the century, the conscience of the Western world forced Brussels to call a halt.

5. Pol Pot

Pol Pot was the leader of the Khmer Rouge and the Prime Minister of Cambodia from 1976 to 1979, having been de facto leader since mid-1975. During his time in power Pol Pot imposed an extreme version of agrarian communism where all city dwellers were relocated to the countryside to work in collective farms and forced labour projects. The combined effect of slave labour, malnutrition, poor medical care and executions is estimated to have killed around 2 million Cambodians (approximately one third of the population). His regime achieved special notoriety for singling out all intellectuals and other “bourgeois enemies” for murder. The Khmer Rouge committed mass executions in sites known as the Killing Fields. The executed were buried in mass graves. In order to save ammunition, executions were often carried out using hammers, axe handles, spades or sharpened bamboo sticks.

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Persoanlly I would add the likes of Columbus, for obvious reasons. It was the start of the genocide of the natives, such as in Hispaniola (modern day D.R.)

And also Oliver Cromwell, who killed 1 million irish people in the space of 9 months, and took the land from catholics to prodestants. I thought it was weird there was no english or americans on the list.