Thoughts on this interesting question?

Ok first off i am not a murderous person with homicidal thoughts i dont like to see suffering n i hate it when people kill animals so here goes my interesting question: do you think murder is justifiable in a case where a two random douchebags decided to throw stones and make fun of a retarded guy just imagine ur walking in a park and there a retarded lonely man sitting on a bench then two obnoxious dudes decide to bully him and throw stones at him do u think it would justifiable to kill the two guys or wuld u consider an alternative such as beating them up instead i ve actually seen this happen n considered beating them up cuz it really angered mebut i am in no way a sadistic pscycopath i am just presentin an interesting question