Thanks for the reply.
I'm making a broad generalization: conspiracy theories (such as Illuminati/Masonic) that undermine the legitimacy of American government and its leadership are similar enough to the Dajjal concept that they can be considered together at least in the sense that an "all powerful" superpower with wicked, secret control would be almost as bad as the Islamic concept of wickedness in the Qiyama.
It's surprising how many people either believe that Mossad committed 9/11 or that while the Islamic extremists are violent and must be stopped, President Bush or Ariel Sharon are worse than Saddam and OBL combined because of their influence on the world stage.
You were discussing the corrosive nature of these theories in the West, and I'd generally agree. I was talking about the aggressive and violence-inspiring nature of these theories within the worldwide Muslim culture.
A major difference that I see is that in the West, belief in an Illuminati-type conspiracy tends to encourage political apathy ("what's the use -- the elections are rigged, besides, it doesn't matter because the Rapture will happen any minute now") and / or defensive paranoia ("better stockpile guns and C-rations in the basement for the day THEY try to print a barcode on my forehead").
But in the Muslim world, the belief that the West is collectively the Dajjal inspires aggressive violence ("the imam says that it's the end of the world, there is no future, and I'll be judged as to whether I helped bring about the prophesied victory of Islam over the Dajjal, so I might as well strap on a dynamite belt and walk into that restaurant").