This is why Muslim scum kill Muslim scum.

"The Sunni and Shiite branches of Islam split in the late seventh century in a dispute over whether the Prophet Mohammed's son-in-law, Ali, should carry on as the fourth caliph, or successor. The Shiites - meaning partisans or supporters of Ali - lost, and since then have been a kind of underclass in the Islamic world, nurturing an emotional faith with an emphasis on martyrdom."