NPR's A Martinez speaks with photojournalist Ivan McClellan about his new book documenting Black cowboys, Eight Seconds: Black Rodeo Culture.

Every year, thousands of people travel to the Georgia National Fairgrounds and Agricenter in Perry to watch cowgirls and cowboys compete in the Georgia National Rodeo, the only rodeo in the state that affects world rankings.

You might not guess it from old Westerns, but many of the bull riders and cattle ropers of the world are people of color. African-Americans, Latinos,...