What are some of the superstitions in 'To Kill a Mockingbird'?

There are two mains ones. One, is the alleged guilt of Tom Robinson and his supposed crime against Mayella Ewell. The other main superstition is about Mr. Arthur "Boo" Radley. Most people assume that he is a bad person simply because of the rumors and tales of the reason why he stays locked up in his house all of the time.