Forty years after Paris' famous May 1968 protests, the true meaning of the uprisings is debatable — but that's not for lack of documentation. The Berkeley Art Museum complements the Pacific Film Archive's The Clash of '68 series with this landmark exhibition of large-scale photos by Serge Hambourg, a photojournalist who captured the tumult for the French weekly Le Nouvel Observateur. His striking images of riots and marches have a special resonance on the UC-Berkeley campus, itself a beacon of '60s radicalism.