Why does Toby say he wants to kill dwight

There are a lot of reasons that Toby (Jack) wants to kill Dwight. Dwight is an alcoholic who abuses Toby constantly. He beats Toby and Rosemary. He steals their hard earned money and belittles them in public. Toby is stealing money on his newspaper route to make enough money to run away. He fantasizes about killing Dwight.