“In a surprise announcement Tuesday, the Walker said [Olga] Viso, who has led the internationally known center since 2008” – with a considerable record of achievement, it must be said – “will leave by year end. Four sources close to the board characterized her resignation as the end result of a monthslong process fueled by unusually high turnover among Walker staff and demonstrations against the Scaffold sculpture that delayed the gala opening of the Minneapolis Sculpture Garden last spring.”