Look at the name “Islamic State”
They have implemented a form of sharia law based on a religious text.
They have captured Christians and executed them for being of a different faith.
And even more simply, they do everything in the name of allah and Islam.
Whether it is a perverted form of their religion or not, it is first and foremost religiously motivated. Secondly, a response to foreign occupation and western democracy.
And just because someone has the title “Cardinal” in front their name does not make them anymore intelligent than a common man. There have been more than plenty idiotic clerics with “cardinal” and “pope” in front of there name.
Just to be clear, my last statement is not intended to be an ad hominem attack on Catholicism. There are plenty of idiotic “pastors” and protestant clergymen in history as well. Nor am I calling Cardinal Dolan and idiot, because I think he is a good man and a relatively good leader. But he has it wrong on this subject.