An exhibition of work by artist Gregory Thielker, “The Wall” combines painting, found objects and video to create a complex oral and visual portrait of the border territory between the United States and Mexico. Thielker’s exhibition is a timely examination of border geography and its human connections. An opening reception will be held on Thursday, March 1 at 5:30 p.m. Cohen Gallery, Granoff Center for the Creative Arts, 154 Angell Street.