They dont need to because their governments are part of such crusades in shape of different organisations whereas Muslim countries are just shitty in this regard they are also with the same crusaders hence frustrated individuals find such ways to take up arms
There is no Christian crusade against Muslim countries, its all wars for resources and interests. 50+ Muslims countries put together can't even produce more scientists then South Korea never mind trying to fight the ''Evil west''.
whatever you call these Muslim countries are being pushed back in name of such wars and sometime in name of democracy when the fact is usually the foreigners support dictators for that
were you an angry guy before?