If I recall, the first crusade was called because the Byzantine empire wanted help getting some stuff back from the Turks. Alexius Comnenus just wanted some military assistance, I don’t think there were crazy religious undertones at that point (at least not beyond what was normal for that time). Then the Pope got involved and some wackos in Western Europe took things WAY too far.

I have rarely seen a nation further from “christian values” than the United States at this moment.