Artist Deborah Kass’s monumental sculpture OY/YO was a phenomenon when it was first installed on Brooklyn Bridge Park’s Main Street lawn in 2015. Three years later, the groundbreaking work returns to Brooklyn, as part of a public art activation at the Brooklyn Museum. Joining text-based work by other Brooklyn-based artists—Brooklyn Hi-Art! Machine, Kameelah Janan Rasheed, and Hank Willis Thomas—OY/YO has been installed outside …