Narrator: When the war ends, Clark's activism takes a new turn. At his urging, the men of the 60th meet in Davenport, Iowa, and draw up a petition demanding the right to vote.

Brodnax: What Clark and Frederick Douglass and other leaders were saying is we've earned the right to vote. We went off and fought even for a country that didn't treat us fairly. One of the famous quotes from Clark is that he who has been trusted with the musket can and ought to be trusted with the ballot.

Narrator: 1867 and 1868 turn out to be pivotal years in Clark's life. At about that time a state legislator, John Lake Crookham, moves to strike the word "white" from the Iowa constitution. And Clark's campaign to get African-American men the right to vote finally succeeds.