Zooming in on turmoil: Exhibit focuses on the most tumultuous moments of 1968

The sound of a baton beating a demonstrator still rings in Art Shay’s ears, 50 years later. It was a humid night in Chicago when Shay, a photojournalist who already had captured some of the most iconic images of the tumultuous 1960s, joined a throng of Vietnam War protesters at the Democratic National Convention.