Question

How do we know that Tom Robinson could not have done what he is accused of (what avtually happened) and what is the climax of Atticus' closing statement?
from the book to kill a mocking bird

Answer 1

According to the sheriff's testimony, Mayella's bruises were on the right side of her face, which means she was most likely punched with a left hand.

Atticus explains how there is no medical evidence to convict Tom Robinson of raping and beating Mayella Ewell at the beginning of his closing remarks. He points out Mayella and Bob's conflicting testimonies and elaborates on why Mayella accused Tom Robinson of raping her.