What lynching did Henry fonda see at 13 years old?

Answer 1

According to Wikipedia, at age 14, Henry Fonda's father took him to a lynching of a suspect in a rape.

In those days, lynchings were considered as civic events to be enjoyed by the entire community. Local newspapers openly carried news of the hangings, and sometimes post cards of the lynching victim were sold as souvenirs.

If the lynching victim was a black crime suspect, no investigation of the lynch mob would ever occur.