Whether you love it or hate it, there is no denying that religion throughout history has been the cause for some pretty messed up stuff - war, genocide, discrimination, slavery, [insert bad thing here], etc. - you get the idea.
However, arguments can be made that many of these negatives instead are the result of political and economic motives, rather than religious. Religion was simply used at the time as a justification for said horrible acts (and it could be argued that if religion wasn't usable as an excuse, the political leaders of the time would have found another reason to pin it on). Regional religious conflicts in parts of the Middle East and Africa can be view as more cultural conflicts as a whole rather than religious.These causes can get especially murky going back past 500 years ago or so, when political leaders and religious leaders were often one and the same.
A famous example of a bad thing religion has caused were the Crusades in the Middle Ages. While done in the name of religion and "taking back the Holy Land from the heathens", there were far more concrete political and economic reasons for the wars (freeing up land trade routes to the East, etc.).
What do you think is the role of religion in many of these situations? Is it the major cause for people to go and commit such horrid acts? Or rather is it simply a justification for said acts, done with ulterior motives by political leaders of the time?
Granted, there are good examples of each, but in a global, overarching historical context, does religion as a whole deserve the blame that it receives?