His parents wanted him to be a lawyer, but Adelman wanted to have more of an impact on changing the law.
That's the relevance of these images a half-century later, he said. People are still fighting poverty and inequality, but Adelman thinks recent protests have lacked the focus of the civil rights era.
"The (Occupy) Wall Street people — I think the whole country was outraged at Wall Street's behavior, but they didn't have a plan. It was more emotional, it had no stated goals other than protest," Adelman said. "The movement had very definite goals. The first was end segregation."