Fifty years since March on Washington, partisan divide persists

The fiftieth anniversary of the historic March on Washington, celebrated in the nation's capital this week, is being marked with separate events by Republicans and Democrats as a sharp partisan divide persists on issues of race in America.

Half a century after Martin Luther King Jr.'s "I Have a Dream" address, which became a crucial moment in the struggle for civil rights in the U.S., a new national poll indicates a left-right divide over whether King's dream has been reached. And political issues that involve race, including voting rights and...