There are several significant pieces of evidence that the jury purposely ignores during the Tom Robinson trial.
1. The jury completely ignores the fact that there is no medical evidence that proves Mayella Ewell was raped.
2. The prejudiced jury also ignores the fact that Mayella's injuries were located on the right side of her face as well as around her neck, which suggests that her father was her perpetrator. Given the fact that Tom Robinson has a crippled left arm that is completely useless and Bob Ewell is left-handed, one could surmise that Bob was his daughter's attacker.
3. The jury also ignores Mayella's conflicting testimony. During Atticus's cross-examination, Mayella switches her story several times and contradicts herself, which indicates that she is obviously lying.
4. The jury also neglects Mayella and Bob's motivation to lie about Tom Robinson assaulting and raping her. Atticus makes it clear that Mayella broke a time-honored code by tempting a black man, which prompted her father's violent response.