ISIS are making enemies even among their fellow muslims. The woman they killed (Kayla Mueller) was actually a pro-palestinian activist. She spent a month in Rammallah protesting the destruction of palestinian buildings by Israel. She also spent a lot of time working with Syrian refugees.
Below is a pic of Palestinians protesting her killing.

They are also showing how cowardly they are. Instead of going to help Palestinians, they have skipped all the way to Libya to go and kill coptic Christians.
All this because they are scared to death of provoking Israel . Bunch of chickens