How well does mr gilmer prove tom's guilt in the eyes of the reader you and the eyes of the jury?

Mr. Gilmer does not prove Tom's guilt at all. Atticus does far more to prove Tom's innocence and how it was Bob Ewell who beat Mayella, but the town refuses to go against a white man's Word over a black man's. The prejudice against African Americans was so strong in Maycomb County that the jury would allow an obviously innocent man to go to jail than to turn against one of "their own", even if Bob Ewell was known to be an abusive alcoholic.