In the summer of 1965, Sales left Tuskegee to work full-time as a voter registration organizer as part of the U.S.
Civil Rights Movement.
SNCC assigned her to Calhoun County, Alabama. Students in Fort Deposit, a small town in
Lowndes County, asked SNCC for its support in a demonstration aimed at protesting the local store-owner's treatment of their
sharecropper parents and the organization sent members from various counties to join their cause. Sales acknowledged that she and the others were scared, and that violence and intimidation in
"Bloody Lowndes" had been well-documented. Sales was one of the 30 people who took part in the demonstration on August 14, 1965. Many members of the group were arrested and taken to the county seat of
Hayneville. After being jailed for six days, the group was suddenly released. No advance notice was given, so there was no one available to pick the demonstrators up. She and a few others went to a nearby store to get something to drink. There she and the group were threatened by a shotgun-wielding state highway department employee, Tom Coleman, who was also a volunteer county deputy. One of Sales' fellow marchers,
Jonathan Daniels, a White
Episcopal seminarian, pushed her out of the way and took the shot meant for her, dying instantly. Daniels was a 1961 graduate of the
Virginia Military Institute (VMI) and
valedictorian of his class, and was studying at the
Episcopal Theological School in Cambridge, Massachusetts. Sales was so traumatized by Daniels' murder that she nearly lost the ability to speak for the next seven months. Despite death threats made to her and her family, Sales resolved to testify at Tom Coleman's trial. He was acquitted by a jury of 12 white men and said in a CBS television interview a year after the killings that he had no regrets, declaring, "I would shoot them both tomorrow." ==Continued civil rights activism==