I am aware that there are Islamic teachings which lead to a more peaceful application of that faith. I think that the interpretation referenced here is an accurate depiction of of the application of Islamic teachings of a thousand years ago. It also seems that it is still relevant to Islamic extremists today.
I want to emphasize that this video discusses events which happened almost over a thousand years ago. The reason I am posting it here is to correct the inaccurate history of the Crusades which is being used in the popular media to attack and degrade Christians and Christianity.