Ken Johnson writes in The Boston Globe: �As the war in Iraq grinds on toward no very clear end, collective reaction to it by contemporary American artists remains muted and uncertain. Two exhibitions responding to the war — one directly and the other indirectly — are now on view in Boston: a powerful solo show of recent paintings by the celebrated political artist Jenny Holzer at Barbara Krakow Gallery, and “War and Discontent,” a well-meaning but muddled exhibition of historical and contemporary works at the Museum of Fine Arts. Neither exhibition solves the problem of what to do about Iraq, but together they afford a good opportunity to think about how artists grapple with terrible events in the real world.� Read more. �War and Discontent,� Museum of Fine Arts through Aug. 5. Jenny Holzer: Archive,�?Barbara Krakow Gallery, 10 Newbury St., closed June 6.