Oh the First Crusade? You mean the one that was provoked by Islamic conquest of Christian lands within the Byzantine Empire and the taking of Jerusalem, Christianity's most holy city? That First Crusade? The one Muslims love to bring up and play victim about when they started it?
I can at least denounce the cannibalism because the Bible says that cannibalism is a severe violation of natural and divine law.
Now can you denounce the Islamists in Nigeria massacring Christians which is currently happening?