Quote:

680 AD: Hussein, son of Ali, marches against the superior army of the caliph at Karbala in Iraq. He is defeated, his army massacred, and he is beheaded. The split between Shia and Sunnis deepens. http://www.npr.org/templates/story/s...toryId=7280905

Makes about as much sense as most other religious or partisan sectarian warfare.

Islam has been in sectarian conflict for over 1,000 years.

So, this call to sectarian battle should not surprise you ...