They are ignorant of world history. Americans in particular are capable of extremely well organized campaigns of individual and group self-defense, that is, extraordinary violence.
The Muslims have not studied our Revolutionary War. The violence they now infilict on us (and Jews, and Spaniards, and the English) is nowhere near as devastating or effective as that used by the Colonists AND the Loyalists against each other during that time.
That ability continues today. It has through all our wars, especially the Civil War in which the stakes were very personal.
The Muslims have made the same mistake, in a very different way, that the Japanese made by attacking Pearl Harbor. In the words of the great Japanese Admiral, "I fear we have awakened a sleeping giant".
Well, rag heads, we are not asleep this time.
Well done.
Lets hope to God that its not a Sleeping Democratic Giant!