Where there is war, or the threat of war, there will always be anti-war protest, and a new exhibit examines the movement from an artistic perspective. From Vietnam-era posters depicting the My Lai massacre to T-shirts decrying the Bush administration’s current Iraq policy, visitors can trace not only the recent history of American political demonstration, but the way in which contemporary sensibility informs the art of such protest. In Vietnam, shock value was front and center, but today’s anti-war movement seems to rely as much as anything on the cynical humor often ascribed to Generation X.