The truth is that Islam has ALWAYS been a source of eviil and terror, and any accomplishments found within any Islamic-ruled society have been due to the conquered Christians, Hindus, et al.
For instance, "Arabic numerals" must be referred to as "Indian numerals" to be historically accurate.
Islam has never been tolerant, except MAYBE in a very limited comparison to the Bysantines.
Any other "advances" in technology, culture or art were stolen from others during raids while passing through the area.