Sacco & Vanzetti Trial-- If you were the defense, what would be your thesis that they were innocent, etc.?

Question

If possible, can someone tell me some interesting facts or truths for the defense that I don't have? So far, I know that several witnesses for the defense say that the people who committed murder didn't look like Sacco or Vanzetti, and I know that on the day of the crime, Sacco was seeking an Italian consul at Boston and Vanzetti was at Plymouth (?), but I need a third reason to support my theory that they're guilty. (We're having a 'trial' of Sacco & Vanzetti in class tomorrow.)

Answer 1

They found out that Sacco owned a gun and that the bullets he had were similar to the ones used in the robbery.

Answer 2

try the link