I didn't know that

Finally, claims that Muslims have been harboring bitter resentments about the Crusades for a millennium are nonsense: Muslim antagonism about the Crusades did not appear until about 1900 in reaction against the decline of the Ottoman Empire and the onset of actual European colonialism in the Middle East. The Triumph of Christianity, page 216

<idle musing>
Interesting, isn't it? Again, we read back our current situation into history...
</idle musing>