That's an extremely selective example to support your view. For an example of the opposite, look at the Khmer Rouge, which governed with a specifically anti-religious stance, committed genocide and torture, and starved a large portion of their population. Or consider Stalin and Mao, who killed tens of millions each, or even the French Revolutionaries, who killed tens of thousands without trial.

Religion is not the source of evil, either in individuals or in governments. Evil is in people's hearts. Sometimes it is expressed via religious action, unfortunately. But the two should not be conflated.