President Bush's remarks on the South Lawn five days after the attacks were widely disseminated in the Arab-speaking world.  In his brief remarks, considered by many to be a significant public relations gaffe, President Bush used the word "evil" nine times and the word "crusade" to characterize the war on terrorism.
 
But we need to be alert to the fact that these evil-doers still exist.  We haven't seen this kind of barbarism in a long period of time . . . This crusade, this war on terrorism is going to take a while.  (George W. Bush 9-16-01)

Osama Bin Laden's first public statement after the attacks, which was aired on Al-Jazeera television, capitalized on Bush's rhetoric.
 
The entire West, with the exception of a few countries, supports this unfair, barbaric campaign. The positions of the two sides are very clear . . .  This clearly indicates the nature of this war. This war is fundamentally religious. The people of the East are Muslims. They sympathized with Muslims against the people of the West, who are the crusaders.  (Osama Bin Laden 10-7-01)

In his next statement, Bin Laden mentions the word "crusade" or "crusader" seven times.
 
After the US politicians spoke and after the US newspapers and television channels became full of clear crusading hatred in this campaign that aims at mobilizing the West against Islam and Muslims, Bush left no room for doubts or the opinions of journalists, but he openly and clearly said that this war is a crusader war. He said this before the whole world to emphasize this fact. (Osama Bin Laden 11-3-01)