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At the culmination of the Selma to Montgomery March, American religious and Civil Right leader Martin Luther King Jr (1929 - 1968) (fore right) and Bernard Lee (1935 - 1991) of the Student Non-Violent Coordinating Committee walk at the the head of the march, Montgomery, Alabama, March 25, 1965. Among the activists in the front line of the march are, from fourth left, Bayard Rustin (1912 - 1987) (in profile, leaning to his left), Rosa Parks (1913 - 2005), Ralph Abernathy (1926 - 1990), Ruth Bunche, Ralph Bunche (1903 - 1971), and Coretta Scott King (1927 - 2006). At the end of the march, King delivered his 'How Long? Not Long!' speech. (Photo by Charles Shaw/Getty Images)

At the culmination of the Selma to Montgomery March, American religious and Civil Right leader Martin Luther King Jr (1929 - 1968) (fore right) and Bernard Lee (1935 - 1991) of the Student Non-Violent Coordinating Committee walk at the the head of the march, Montgomery, Alabama, March 25, 1965. Among the activists in the front line of the march are, from fourth left, Bayard Rustin (1912 - 1987) (in profile, leaning to his left), Rosa Parks (1913 - 2005), Ralph Abernathy (1926 - 1990), Ruth Bunche, Ralph Bunche (1903 - 1971), and Coretta Scott King (1927 - 2006). At the end of the march, King delivered his 'How Long? Not Long!' speech. (Photo by Charles Shaw/Getty Images)