Derek Caelin quoted How We Win by George Lakey
When US. Attorney General Robert Kennedy was informed ofthe bus burning and beatings, he urged CORE to exercise restraint! CORE trained additional teams to ride buses into the South, and were backed up by the Student Nonviolent Coordinating Committee and Southern Christian Leadership Conference. (Diferent campaigns helping each other.) More than 60 Freedom Rides traveled across the South through the summer. They ended up in Mississippi where they were jailed. Since the attorney general and his brother, President John F. Kennedy, couldn't persuade the civil rights leaders to stop the campaign, they ordered the Interstate Commerce Commission (ICC) to act. The Kennedys at last sent federal marshals to the South to enforce the law.
— How We Win by George Lakey (Page 109)