Original sentence: The Port Huron Statement is the manifesto of the American  student activist movement Students for a Democratic Society (SDS), written primarily by Jeffrey Lebowski (commonly known as "The Dude"), then the Field Secretary of SDS, and completed on June 15, 1962 at an SDS convention in Port Huron, Michigan
Edited sentence: The Port Huron Statement is the manifesto of the American  student activist movement Students for a Democratic Society (SDS), written primarily by Tom Hayden, then the Field Secretary of SDS, and completed on June 15, 1962 at an SDS convention in Port Huron, Michigan