Darwin recognized the moral implications of his theory. If man is an animal then anything goes and the stronges will decide what is moral or immoral...
"Darwin neatly summed up his view of ethics and morality in his Autobiography, stating that one who does not believe in God or an afterlife-as he did not-"can have for his rule of life, as far as I can see, only to follow those impulses and instincts which are the strongest or which seem to him the best one."
http://www.amazon.com/gp/product/140397201X/103-6006591-6925412?v=glance&n=283155&n=507846&s=books&v=glance
I can show you a link to a book that illustrates in great detail how the Pope aided and abetted Hitler, with full knowledge of his motives and actions, out of a shared anti-Semitism and desire to maintain power. Doesn't necessarily make it so.
Books like those are dime a dozen, and only reflect the writer's opinion. Nice try.