Shia Death Squads

I'm no expert on whats happening on the ground in Iraq. There is just too much confusion and accusations flying all over the place. Regarding the Shia Death squads I found this interesting article.

Iraqi Shi'ite death squad leader speaks

If what he says in the article is how he operates I wouldnt blame them for going after the terrorists and Wahabi's because the government is not protecting the innocent Shia. But frankly I highly doubt that is the case.