" There's history books you haven't read," Harry said quietly. "There's books you haven't read yet, Hermione, and they might give you a sense of perspective. A few centuries earlier - I think it was definitely still around in the seventeenth century - it was a popular village entertainment to take a wicker basket, or a bundle, with a dozen live cats in it, and -"

"Stop," she said.

"- roast it over a bonfire. Just a regular celebration. Good clean fun. And I'll give them this, it was cleaner fun than burning women they thought were witches. Because the way people are built, Hermione, the way people are built to feel inside -" Harry put a hand over his own heart, in the anatomically correct position, then paused and moved his hand up to point toward his head at around the ear level, "- is that they hurt when they see their friends hurting. Someone inside their circle of concern, a member of their own tribe. That feeling has an off-switch, an off-switch labeled 'enemy' or 'foreigner' or sometimes just 'stranger'. That's how people are, if they don't learn otherwise. So, no, it does not indicate that Draco Malfoy was inhuman or even unusually evil, if he grew up believing that it was fun to hurt his enemies - "

― Eliezer Yudkowsky , Harry Potter and the Methods of Rationality