Alton Toussaint Lemon (19 October 1928 – 4 May 2013) was a social worker and civil rights activist best known as named lead plaintiff in a landmark U.S. Supreme Court case on the separation of church and state. His was a recipient of the "First Amendment Hero" award and was the first African American head of the Philadelphia Ethical Society. Early life and education Lemon was born on October 19, 1928, in McDonough, Georgia. He was the second of three children. His father owned a tailor shop in McDonough. He grew up in Atlanta, Georgia, attending public schools there through the tenth grade. He later graduated from a private high school in Lawrenceville, Virginia. He received a bachelor's degree in mathematics in 1950 from Morehouse College. In 1951, he married Augusta Ramsey, a nurse, in Birmingham, Alabama. The couple then moved to Philadelphia, Pennsylvania, where she had obtained work. They had a son, Anthony George and two grandchildren, Ayanna and Athena. In 1965, he received a master's degree in social work from the University of Pennsylvania. Career and views Lemon served for two years in the US Army and worked at the Aberdeen Proving Ground as a civilian for the Department of Defense. As a social worker Lemon had a long career in public service and community organizing. Lemon was a lifetime member of the ACLU and the National Association for the Advancement of Colored People (NAACP). He worked for local community organizations, the Department of Housing and Urban Development, and the Department of Energy (as an equal opportunity and training officer), retiring in 1987. He remained active in retirement serving as the first African American head of the Philadelphia Ethical Society and president of the Philadelphia chapter of the Morehouse College Alumni Association. Lemon described his philosophy as, "'ethical humanism'—reliance on reason in conducting human affairs." He received the "First Amendment Hero" award in 2003 from the Freedom From Religion Foundation, which also recognized him as an "honorary officer". Lemon v. Kurtzman Lemon was the named lead plaintiff in Lemon v. Kurtzman a 1971 case in which the U.S. Supreme Court ruled that a Pennsylvania law allowing public tax funds to be paid to parochial schools violated the Establishment Clause of the First Amendment to the United States Constitution. It is one of the most highly cited Supreme Court decisions. The decision established the Lemon Test a three-pronged evaluation