um, i watched it but no thanks. the guy obviously has a point to prove rather than discussing matters dispassionately. and, i can read things for myself. that go beyond a 12th grade level of scholarship.
Of course he has a point to prove, too bad it went way over your head.
so, um, the christians of course were feeling so pious that they massacred jews, too. what a great time. (oh, of course that never happened...)
No Crusade was ever launched in defense against the Jews. There was a fringe band which was not associated with the main army that had massacred Jews. Pope Urban II and subsequent popes condemned such actions. Local Catholic clergy and laity did try to protect Jews from these kinds of people.
What you speak of, minks, is an unfortunate byproduct of war.
Notice these Islamic conquests happened before and led to the Byzantine Emperor Alexios I Komnenos requested aid from the pope in defense of Muslim aggression.