Lots of atrocities are carried out in the name of God (of pretty much any religion) because it's easy to convince religous people that something is worth doing if you say religion is behind it - the religous are gullible, and using their religion to manipulate them has been found easy to do by many people in history.
I'm surprised that the website TS linked to does not have any information on the worst of the modern day organizations used to exploit the religous "in the name of God" - the Lord's Resistance Army which has been operating in Africa (and mostly in Sudan) with the purpose of constructing a government based around the ten commandments - which is strange since they break nearly all ten of them in their effort to do this. Murdering childrens parents and enslaving the children for use in their army (in the name of God, mind you) is just taste of what they've been doing for decades.