Why is that strange? If you pay attention to your koranology lessons at the madrassah, you will learn of the wars that Islamics have fought against other Islamics. Did your prayer leader discuss that half of the “rightly guided” caliphs were killed by Moslems?
Muhammud’s (swish) cousin, and son-in-law, Imam Ali, was killed in Iraq while praying at the Masjid-e-Kufa—stabbed with a poisoned sword—fourteen centuries ago, when this whole bloody mess began. His son, Imam Hussein, was killed in Karbala—beheaded—on his way back from Mecca.
Shiites believe that Kadhim, who died in 799, was poisoned in prison by a Sunni caliph.
I suppose you believe the slaughter that Moslems have brought to your fellow co-religionists in Iraq and Syria is some grand conspiracy theory?
Because as anyone knows,
Peaceful Inner Strugglers
invite the faithful through acts of insensate hatred and savage violence.