Nah, Islam are the agressors alright, but they sure as hell are not Crusaders. 'Crusader' means, literally, "Cross-bearer" - a name the Christian warriors gave themselves in honor of Christ. I truly hope we can finish the job this time around.
When they call us 'Crusaders,' what they mean is that we are waging a so-called 'holy war' in the name of our religion, for the sake of dominating their people.
They freely acknowledge that this is a bad thing.
In the same breath, they speak of Jihad, and of their 'duty' to Jihad.
What do they mean by Jihad? They mean an aggressive 'holy' war in the name of their religion, for the sake of dominating and subjugating all who do not follow their beliefs.
Therefore, they are the 'Crusaders.'