Born in Fairfield, Alabama, to sharecropper parents,[2] Clemon received a Bachelor of Arts degree from the historically black Miles College in 1965.
He worked in the New York office of the NAACP Legal Defense Fund from 1968 to 1969 and was in private practice of law in Birmingham, Alabama from 1969 to 1980.
[3] In 1969, Clemon sued coach Paul "Bear" Bryant in order to desegregate the University of Alabama's football team.
He also fought against reinstatement of the death penalty after the state rewrote its law on capital sentencing.
[3] In 2018, he successfully litigated with the NAACP Legal Defense Fund to stop the racially discriminatory plan of the Gardendale, Alabama to create a new, mostly white school system by seceding from the Jefferson County school system .
[3] In February 2022, Clemon wrote to president Joe Biden urging him not to appoint Judge Ketanji Brown Jackson to the United States Supreme Court.