Witness is a 1985 movie released by Paramount Pictures, starring Harrison Ford, Kelly Mc Gillis, and Lukas Haas. It was also the feature film debut of Viggo Mortensen, who appeared in a minor role. Directed by Peter Weir (his first American film), it was filmed in Philadelphia and Intercourse, Lancaster County, Pennsylvania.
Witness is a human rights group founded by Peter Gabriel with the sole purpose of exposing human suffering around the world and then making the proper arrangements to correct it. The exposure of these human rights abuses are made on film, via cameras provided by Witness operated by people who "witness" the suffering. Again, both the cameras and the training required to operate them is provided by Witness.