The Islamics have never forgotten the humiliation they received at the hands of Crusaders when the the Crusaders aggressively drove the people of Allah from the area they now call Spain. Out of land that had always been Muslim lands and in fact, was part of the Historical Palestine! Since about 8,0000 years ago! Allah rassul shizzle!
According to Bernard Lewis they completely forgot it until they began reading western accounts of it in the 19th century.
Have you ever known anyone to get so outraged about a war they won?