Tom Hagen, too: when he almost witnessed the act of pedophilia by Jack Woltz (again, this was dropped from the movie), he didn't report to Vito and Vito didn't order to cut Woltz's [censored] off. As long as the pedophile did what they said, they didn't care about the rest.
In the book, Tom does report this to Vito, and Vito just murmurs "infamita."
