Martin Luther King Jr., the Atlanta native who became one of the most important figures in the civil rights movement, helped unite a divided nation.

Monday is MLK Day, the day that celebrates the birthday of slain civil rights leader Dr. Martin Luther King Jr. The National Museum of African American History and Culture offers

“If we will but make the right choice, we will be able to speed up the day, all over America and all over the world, when justice will roll down like waters, and righteousness like a mighty stream.” — Martin Luther King Jr., “Beyond Vietnam: A Time to Break Silence”