The 1968 Exhibit How Transformative Was 1968? By Susan Lewis • Jun 24, 2013 Listen Listening... / 1:46 The musical Hair opened on Broadway, and 2001: A Space Odyssey was at the movies. It was also in 1968 that Martin Luther King, Jr. and Robert Kennedy were assassinated, and 14,000 American military personnel died in Vietnam. A transformative year across American culture, 1968 is explored in a new exhibition that's now on view at the National Constitution Center. The 1968 Exhibit runs through September 2nd, 2013. Listen Listening... / 6:34 Listen to Susan Lewis' interview with Minnesota Historical Society's Brian Horrigan, lead curator of The 1968 Exhibit.