The civil rights movement was well underway when Carter took office. He and his family had become staunch John F. Kennedy supporters. Beginning in 1962, the town of Americus was the site of mass beatings and incarcerations of black protesters, echoing similar unrest throughout the country. Carter remained relatively quiet on the issue at first, even as it polarized much of the county, to avoid alienating his segregationist colleagues. He did speak up on a few divisive issues, giving speeches against literacy tests and against a change to the Georgia Constitution which, he felt, implied a compulsion to practice religion. At the time of President Kennedy's assassination, Carter was informed by a customer of his peanut business of the killing, prompting Carter to remove himself from work and sit alone. Carter later called the assassination 'the greatest blow that I had suffered since my father died.' The Age of Reagan: The Fall of the Old Liberal Order: 1964–1980. Random House Digital, Inc. p. 497. ISBN 978-0-307-45370-9.