Which character was most responsible for Tom Robinson verdict.Explain using Textual Evidence

Bob and Mayella Ewell are both responsible for the verdict, although Bob would probably be considered most responsible because his daughters actions were an effect of fear. None-the-less, in my opinion, racism is most responsible for the verdict, something that could be considered a character, as it has a life of its own.

You know what’s going to happen as well as I do, Jack, and I hope and pray I can get Jem and Scout through it without bitterness, and most of all, without catching Maycomb’s usual disease.