CNN — Jenny Holzer is one of America’s most incisive and respected conceptual artists. Courtesy Jenny Holzer/ARS/VEGAP/Erik Sumption Now, Holzer is posing these questions at “Jenny Holzer: Thing Indescribable,” a new exhibition at the Guggenheim Museum in Bilbao. ANDER GILLENEA/AFP/AFP/Getty Images These pieces are both a continuation of Holzer’s long-standing efforts to give a voice to victims of conflict and …
