Surveillance, a four-channel video work by noted filmmaker Ernie Gehr is installed at the southern end of the Park and takes inspiration from a philosophically-incompatible theme: the fundamentally recreational character of lively public parks in contrast to the disquieting proliferation of security cameras in public life. Gehr poetically applies the aesthetic of surveillance to focus eyes and mind on the sensory visual image and moments of community that make Madison Square Park a treasured urban oasis. Gehr is an experimental filmmaker and known as a figure in the Structural film movement of the 1970s. The self-taught artist is distinguished for his vanguard approach to filmmaking. In a feature on Gehr’s work in The New York Times, the writer stated: “His films make no money, but should be counted among our cultural treasures.”