This television program follows an FBI agent provocateur, Robert Wall. Wall chronicles how he spied on people and institutions. He describes how he surveilled Stokeley Carmichae and tried to incite violence at a peace march.
After a peaceful sailboat ride, four young people, including rich kid Bill, Joe, Fred and Jane, knock on the door of a secluded villa after their dune buggy runs out of gas.
The film by Brakhage commonly referred to as "Wecht" does indeed exist. It doesn't have a titlecard at the head, and the leader of the original is labeled "Portrait" in Stan's handwriting, so I'm not sure where the 'Wecht' title comes from.