A man/woman has five buttons on his/her coat.One day,the button at the bottom was scratched by accident and the other four buttons laughed at it and critize it.The button was sad and it get rid of the coat when the owner was out,it was alone on the street.The owner realised that the botton was missing when he/she went home and so he/she went to buy the same button but he/she could not find the same one.So he/she has to buy another five button to replace it,the four buttons was removed and kept in the drawer.
You are hurting yourself at the same time when you hurt someone.