Terroism

When Christian leaders decided that Crusades were a good idea, it put us into a bind, that redounds to the present day.  Islam ruled the Holy Land.  We sent a big European, Christian army over there to get the Holy Land back for Christian rule.  There was lots of slaughter.  Christians were seen as the invaders, since they came from somewhere else.  They were not Christian Arabs.  Now what if, after the slaughter by all sides, some Christian was to announce to Islam that Christianity is a religion of peace. Would it be believed by Islam?  Our Western armies are mostly made up today of baptized or bar mitzvah people.  Being a religion of peace is a tough sell in some places.  Now Islam has the same problem with ISIS type believers getting in the way of a message that says Islam is a religion of peace.   I am not so sure you can have it both ways.  I try to tell people that religion is of peace, but I can see in many cases that I am not very convincing.