I think this comment by an MSNBC journalist gives a good insight into the confluence between the Gramscist movements and radical islam.
Radical islam has the illusion of being the product of "Organic" culture (whatever that means). To them it is not the product of the illusion of the marxist evil god of bourgeouis european capitalism as the Miss World Contest is. Therefore radical Islam is somehow better. It seems that journalists treat everything as mere abstractions, as if all news stories, including the Miss World thing were taking place inside of a surrealist novel and not resulting in the death of hundreds of people.
This is a dangerous side-effect of abstract and surreal movements in the arts and entertainment. They tend to make us disconnected from the empirical reality of most situations.
Some of it, too, is the liberal left version of "The enemy of my enemy is my friend." Liberals have been trying to take down Western culture for a long, long time, and since radical Islam has the same aim, lefties see them as "friends." What they don't realize is that in a real Islamic takeover, their heads would be first on the pikes anyway - unless they converted, which wouldn't surprise me.