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The Rev. Martin Luther King Jr. (left), in a Chicago news conference with Thích Nhất Hạnh (center), calls for a halt in bombing of Vietnam on May 31, 1966. (AP/Edward Kitch)
The Rev. Martin Luther King Jr. (left), in a Chicago news conference with Thích Nhất Hạnh (center), calls for a halt in bombing of Vietnam on May 31, 1966. (AP/Edward Kitch)