I don't think you know how philosophy works. I can't prove a negative, you have to prove a positive. Can you prove there isn't a magical unicorn in my bedroom right now? And what prove do you have? Some magical book says it exists, so it has to exist? Please provide proof.
@tajshar2k, There is, unfortunately, a lot of that going on here. Everyone seems to demand proof of a negative. This is the dumbing down of humanity. I recently posted a poll, "The Existence of God Cannot Be Proven. This is Not Proof God Does Not Exist." Most people voted against the statement because it is false, as the existence of God cannot be proven. Stupidity of the highest order.
Islam after Muhammad divided into two branches, those who saw Ali as the true successor of Muhammad, and those who didn't. Ali, as well as our other Imams, taught Islam the way it was taught by Muhammad. And if you want to know about true Islam that Ali promoted, read the following and take a look at the link: Secretariat, the Committee of Human Rights in New York under the chairmanship of the Secretary General Kofi Annan issued , in 2002 A.D. , this historic resolution:
"The Caliph Ali Bin Abi Talib is considered the fairest governor who appeared during human history"
ISIS has very little connection to mainstream Islam. It's nothing more than a mob than throws around the word "Allah" and "Islam", and performs a few "religious practices", and beheads, shoots, and kills. The group doesn't even take God or religion seriously. It's a complete fraud of a movement.