According to the United Nations panel of inquiry into the murderous attacks of May 2010, the Israeli boarders used "excessive and unreasonable force" to overcome resistance from the boat's unarmed civilians, the loss of life was "unacceptable" and the naval commandos were "abusive" in their treatment of other passengers. The report found that "forensic evidence showing that most of the deceased were shot multiple times, including in the back, or at close range has not been adequately accounted for in the material presented by Israel."
http://www.morningstaronline.co.uk/content/view/full/109019