Vito Acconci, Following Piece (1969)
For 23 days he chose random people on the street to follow. He did so until they entered a private residence or office. He typed accounts of the pursuits and sent them to different arts people around town.
Vito Acconci, Following Piece (1969) Mixed media, 30 inches x 40 inches
This piece has many critics due to the problematic nature of following a person without their consent.