p.s. For clarity's sake. I'm not saying that Draco's sociopathic moments are only important because they hurt him. I think part of the idea is that even if you don't really believe or understand what you're saying your choice to say or act a certain way effects you. So I don't want to make it seem like I'm separating Draco's worst moments from his essential character. They are part of his character, only I think with him we're encouraged to see him weakening himself.