It started before that - when the Muslims initially overran Christian Palestine, Egypt and North Africa. When they invaded Christian Sicily and southern Italy, when they sewpt over the Iberian Peninsula and plunderd, looted and killed as far north as Tour - which is in northner France not far from Paris.
Even today these vicious killers are trying to Islamicize Ethiopia - which became one of the first Christian nations in the 300's, trying to totally Islamicize the once Christian south of the Sudan, spreading into Christian Nigeria, threatening and killing the few remaning Christian Copts in Egypt, blwoing up Islraeli civilians, trying to Islamicize the Phillipines, threatening and killing Buddhists and Hindus in southern Asia, trying to excport their evil creed into the U.S., etc. etc.