In the wake of the Nice attacks people are already saying: "But the terrorist wasn't pious. See! It has nothing to do with Islam."
Your good intentions towards us Muslims are only making the problem worse. This is as dangerous as saying it is everything to do with Islam.
The Crusaders weren't pious. But they had something to do with Christianity, right? Right? That something was the desire impious religious peasants had for martyrdom and the religious promise of redemption that Pope Urban II gave them.