How to justify a massacre in Syria by the rebels: say that the killers had non-Syrian accents

"In a video posted Tuesday on YouTube, a man shows the dead bodies of several Shiite Syrians in Hatla, and angrily calls on his fellow Sunnis to "massacre" their Shiite compatriots. The man speaking is not Syrian, he is Kuwaiti, and very few of the armed "rebels" seen with him in the video sound Syrian -- the accents are largely Kuwaiti and Iraqi. There were other, similar videos posted of the alleged massacre in Hatla."