I honestly do not know that I have ever read their posts before, but noted for future reference.
I think really what I find to be common about human beings that do atrocious things to other human beings is not a religious ethos or atheistic one or anything else. People who do awful things to others try to find a group that can either be controlled or manipulated. You see this with the uneducated GQP being weaponized through the use of a religion they barely have a passing knowledge of. China and North Korea, as recent examples, control countries through fear and intimidation and torture without using religion. The Middle East has countries where the uneducated are weaponized by distorting Islam and turning things into a jihad.
People just look for ways to control a group of people that is large enough and powerful to help them reach their goal. That’s basically been human history from the jump. Humans looking to control others to get what they want will never change. Completely blaming religion for atrocities shows a level of intellect on par with GQP members etc…