Rorty's ultimate targets are two: the first is Kant's idea that you can distinguish between what is "given" and what is "added by the mind."

Well, the word "added" may be misleading, because "added" implies "something that isn't there," whereas we can argue that in organizing what is "given," the mind gives us a better understanding of what's there than if we'd just let it impinge on us chaotically. (Not that I accept the intuitions-are-given-and-mind-organizes-them model.)