Then you're not exactly a rational being; you're just a barbarian.
Hopefully you get thrown in jail/fined, and hopefully you learn your lesson.
And then it goes off the rails, calling for vengeance.
Statists are just one ladder rung up from barbarians, painting a thin veneer of excuses over group-backed violence. Take the next few steps and learn about peace-based alternatives! It's the means, not the ends, that determine whether an act is just - this can be easily proven with reason.
"An eye for an eye only ends up making the whole world blind." - MK Gandhi