FWIW I think that this attitude is at the core of issues such as mass shootings and police violence. That I think it's largely cultural is also why I'm not convinced that gun restrictions will be super-effective at combating it. I think that all humans experience some measure of schadenfreude at seeing people they dislike get a comeuppance, but I don't think that enjoying physical retribution is innate. I remember one year we were over at my sister's house for the holidays and watching A Christmas Story. My 2yo niece was with us on the couch when the scene where Ralphie beats up the bully came on---you could tell that she was horrified whereas noone else seemed to think twice of it. Unfortunately cultural issues are difficult to solve. Christianity brought "turn the other cheek", but 2000 years later look where we are.