Why should you fight injustice, if it affects only others? Why should you defend rights that don't affect you? Because it isn't justice if you only care when it applies to you. Because rights apply to all, or nobody at all. Because you are a true warrior, and honor calls for it.
Injustice never affects 'only others.' Accepting that some people can be treated like crap perverts your own humanity and frays social ties and the social contract. Once you start lopping off who 'we' includes, you are already maimed and deformed your field of view.
