Atheism is the force behind mass murders

Religious causes have caused some wars and deaths. But the mega numbers belong to atheism. During the 20th Century Lenin, Stalin, Hitler and Mao exceede 100 million deaths. And that number is just killing their own people. The wars they caused killed many more. But atheist of the 21st century see only religion as the cause. Dinesh D'Souza of Hoover Institute reports:

The problem with this critique is that it exaggerates the crimes attributed to religion, while ignoring the greater crimes of secular fanaticism. The best example of religious persecution in America is the Salem witch trials. How many people were killed in those trials? Thousands? Hundreds? Actually, fewer than 25. Yet the event still haunts the liberal imagination. It is strange to witness the passion with which some secular figures rail against the misdeeds of the Crusaders and Inquisitors more than 500 years ago. The number sentenced to death by the Spanish Inquisition appears to be about 10,000. Some historians contend that an additional 100,000 died in jail due to malnutrition or illness. These figures are tragic, and of course population levels were much lower at the time. But even so, they are minuscule compared with the death tolls produced by the atheist despotisms of the 20th century. In the name of creating their version of a religion-free utopia, Adolf Hitler, Joseph Stalin, and Mao Zedong produced the kind of mass slaughter that no Inquisitor could possibly match. Collectively these atheist tyrants murdered more than 100 million people. Moreover, many of the conflicts that are counted as "religious wars" were not fought over religion. They were mainly fought over rival claims to territory and power.