So what about Stalin, Mao, and Pol Pot?
Ideologies which have large power bases are the problem, not religions per-se. Look at those that were not religious that held great sway in politics - Hitler, Stalin, Mao, Pol Pot, and many others did some dastardly things, none of which were in the name of any god, but in the name of their political ideologies. I'd venture to say that those four combined killed more men and women than any person has in the name of religion.
One could list many of the beliefs of secularists over the past century or two, and come to the conclusion there is a lot of evil in any ideology if it is used to undermine those that they believe are societal ills.
On the other end, I could cite all the great things Christians have done for humanity. It has been a major force for hospitals, food banks, poverty relief, and humanitarian aid over the centuries.
In the end, power breeds corruption and abuse. The more power an ideology has over free thinking people, the more damage it can cause, as it will hurt the minorities that do not adhere to the majority view. This is expecially true when the ideology devalues the life of humans, which has been the case with some ideologies.
Back from the dead, I'm afraid.
