Mike at Crime & Federalism makes a good case for not giving a shit when you see someone getting harassed or picked on. (here) Essentially his point is that if she’s not actually getting raped or killed, you have more of a chance of winding up in prison for being a “White Knight,” so better to let small petty annoyances go unchecked. Why? Because we have a “pussified legal system.”
I am not sure if I’d 100% sign on to his view. But, it is persuasive. We have become pussified. There was a time when you could rightfully punch a guy while defending a woman’s honor. No physical threat necessary. Now? Good luck with raising that as a defense if he presses charges.