Clockwise, from left, Deana Lawson, Pope.L, Lyle Ashton Harris, Maya Stovall, and Cauleen Smith (center).   THE WHITNEY MUSEUM OF AMERICAN ART announced 63 individual artists and collectives participating in the museum’s 2017 biennial. Largely informed by the contentious political climate and the socioeconomic issues dividing Americans, the exhibition will explore themes including “formation of...