I think this thread perfectly illustrates why this title would be a very bad idea
Also, Hypnotoad, you need to calm the
down m8.
But all in all, regardless of the ignorance and obvious bias on all sides shown in the thread, the OP's initial description is spot on.
The achievements of the Islamic civilization
post conquest, simply cannot erase the fact that they wiped out swarms of christian/zoroastrian populations
during their conquest.
Africa and Egypt had nearly a third of their entire (at the time christian)population butchered in a single onslaught, the other regions did not fare much better.
Not to mention slavery...holy Christ Marduk Anu Almighty dat slavery...so...much...slavery...slaves, slaves everywhere...
If you have any questions go google the ethnic map of Arabs pre and post the spread of Islam.