Has Justice been served in this novel?

In To Kill A Mocking Bird, by Harper Lee, there is what may be though of as a different definition of justice. Harper Lee's definition of justice is when everyone is treated equally. I believe that there is justice in this book. I say this because at the end of the book Mr. Ewell dies. Due to the fact that Tom Robinson died and Bob Ewell died there feels as though there is an equality or there is a form of balance. Tom Robinson didn't deserve to die, but Mr. Ewell practically caused his death by accusing him of rape and getting him sent to the prison where he was shot. Even though it is sad when every one dies, I feel that justice is served when Bob Ewell dies, because the black people lost someone and so did the white people. Mr. Tate says "let the dead bury the dead this time," (Lee, 396). In other words Mr. Heck Tate is saying let it be or it will take care of itself. In a way it already has. Mr. Ewell essentially killed Tom Robinson, and therefore killed himself. Had Bob not accused Tom of rape he, himself, would not have been after Atticus's kids and killed himself. It was a form of justice and fait. It was bound to happen. This man who is a "low-down skunk with enough liquor in him to make him brave enough to kill children," (Lee, 360), was bound to be killed for his actions. Mr. Ewell had already killed one man and was about to kill two children. He also "had the guts to pester an old colored women, he had the guts enough to pester Judge Taylor when he thought the house was empty.." (Lee, 361).  Due to those reason I believe there is justice and a sense of harmony when Mr. Ewell is found dead at the end of the book.