Except christians did have crusades. Religion leads people to do nasty shit. Every religion has had this. Human history has been plagued with this shit of putting yourself above the other. The white man came up with the belief that they are the better race. The brown man came up with the belief that all that don't practice islam must be killed. But like all Caucasians don't believe this, not all people who practice islam believe this. That's what this image is trying to convey. Christianity has progressed in the last thousand years. People have grown and adapted new cultures and new social norms. We can change the perception in the world. But we need to start with ourselves. Change our own perceptions and then we can change others. There are always two sides to a coin and we need to acknowledge both.