The question of whether religious beliefs contribute to behaviour is obvious and need not even be questioned. If religions had no role to play in people's lives, people would not practice them. This is not controversial at all. What Harris is questioning is the validity, sanctity and the consequences of those beliefs. A combination of factor X (e.g. poverty or dispair) with religion Y (e.g. Islam) is likely to lead to outcome Z as apposed to a case where Y is replaced with W (e.g. Buddhism). This is a very powerful argument that all things considered equal religion does play a significant role in whether or not a person will or will not commit a violent act.
The role of a moderator is to facilitate the debate, not complicate it by interrupting constantly, derailing it by presenting your own ideas in the midst of what could be a fruitful exchange between the two debaters, and spending about as much time talking as your debaters.
I'm an atheist and I think Hedges is one of the best modern writers and a brilliant public speaker. As I read the comments here, and listen to this debate and others, I see how his, Hedges, intelligent queries and narrative are often converted to straw-man or simply ignored. It is a shame and, intellectually, we are worse off for doing so.
Remember that Star Trek movie where Spock's brother is some self-proclaimed holy man who mind melds with people to make their pain go away? It works but the people touched by him walk around like zombies with smiles on their faces. When he approches Kirk he says, "Your pain runs deep. Let me remove your pain." Kirk protests, "NO! I need my pain. My pain makes me who I am!" I think there's wisdom in that even if it's not what we want to hear. Pain also teaches us compassion-empathy.
I am not an atheist but an existentialist and a Gnostic; and I question the essence of what lies beyond the sophism and doctrinal, surface view of spirituality of these Materialist; Reductionist atheist's; and their own faith in their wit and the parochial, linear, Aristotelian view of nature and the cosmos; when their back's are against the wall. I say this because Richard Dawkins went out of his way to get Graham Hancock's lecture taken off of TED; it begs the question; if you are so certain of your "orthodox" view; then what are you afraid of? Why go out of your way to silence the idea's of those that don't accommodate your own. Seems pretty weak to me!