Yes, there is disagreement over the use of the terms "Islamic extremism" or "Islamic terrorism". Many seem unwilling to use the terms at all, saying that ISIS, the so-called "Islamic State of Iraq and ash-Sham" is not Islamic. Nor is it a state.
But, these guys in ISIS think of themselves as Islamic. And they think they have established a caliphate. They follow SOME of the tenets of the Koran, and they often yell, "Allahu Akbar!" (God is Great!) when they are killing others. They are Muslim. They are Islamic. They are extreme. They are killers, not to mention they subjugate women and lots of other abhorrent-to-Westerners activities.
ISIS is Islamic in the same sense that the KKK or Westboro Baptist Church (WBC) members consider themselves to be Christians. Many "good" Christians claim that KKK members are "bad" Christians or not "true" Christians, but ask members of the KKK or the WBC and they will tell you they are Christians. They are Christians. And there are a lot of radical, extreme Christians running loose in America. The U.S.' radical Christians are not killing as many people as ISIS is, of course, but one gets the feeling they want to. See Kevin Swanson. And yes, Ted Cruz, Christians have been and some still are terrorists, you fucking idiot.
The Paris atrocity is another example of how toxic religion can be, especially in the hands of those who are extreme in their "faith" and have no compunction about killing those who may disagree with them. You don't have to be religious to kill people, obviously, but it provides a pseudo-excuse.
I wonder how bad ISIS has to get before those "good" and "peaceful" Muslims decide to do something about the extremist Muslims? ISIS kills about as many Muslims as Christians. Where are the Arab states? Where are the "peaceful" Islamic states? Are there any?
Another appalling aspect of all this is that our Republican Party instantly jumps to politicize this horrific event. "Obama isn't doing enough to keep us safe!" "Obama said ISIS was contained!!" "He lied! Obama is a threat to our national security!" "Obama is a radical Muslim sympathizer!"
It's getting to be so kneejerk. Any event around the world they will twist to somehow blame Obama for it. They are almost as extreme as those killers in Paris, and we'd better keep an eye on them.