The Tears of Jihad refers to the deaths of 270 million people over a 1400 year period. They were all killed for the same reason. They did not believe that Mohammed was the prophet of Allah. These figures are a rough estimate of the death of non-Muslims by the political act of jihad.
Thomas Sowell estimates that 11 million slaves were shipped across the Atlantic and 14 million were sent to the Islamic nations of North Africa and the Middle East1. For every slave captured many others died. Estimates of this collateral damage vary. The renowned missionary David Livingstone estimated that for every slave who reached the plantation five others died by being killed in the raid or died on the forced march from illness and privation2 . So, for 25 million slaves delivered to the market, we have the death of about 120 million people. Islam ran the wholesale slave trade in Africa3 .
120 million Africans
The number of Christians martyred by Islam is 9 million4. A rough estimate by Raphael Moore in History of Asia Minor is that another 50 million died in wars by jihad. So to account for the 1 million African Christians killed in the 20th century we have:
60 million Christians
The Jews had no political control over any country and their deaths were limited to a few thousand killed in riots.
Koenard Elst in Negationism in India gives an estimate of 80 million Hindus killed in the total jihad against India5. The country of India today is only half the size of ancient India, due to jihad. The mountains near India are called the Hindu Kush, meaning the “funeral pyre of the Hindus.”
80 million Hindus
Buddhists do not keep up with the history of war. Keep in mind that in jihad only Christians and Jews were allowed to survive as dhimmis (third-class citizens under Sharia); everyone else had to convert or die. Jihad killed the Buddhists in Turkey, Afghanistan, along the Silk Route, and in India. The total is roughly 10 million.6
10 million Buddhists
This gives a rough estimate of 270 million killed by jihad.