Twenty years later, thousands march in Washington for a medley of causes
For many Americans, it remains one of the incandescent moments in living memory. Facing a throng of 250,000 on the capital Mall, with the Washington Monument soaring before him and the white marble figure of Abraham Lincoln brooding behind him, Martin Luther King Jr. turned mere spectacle into a kind of national epiphany. "I have a dream today," he declared. And again, "I have a dream today." And again. He used the words as more than refrain, more than cadence, almost as biblical exhortation. And as his listeners...