Complex sentence: The Phurst Church of Phun, an organization that engages humor toward social change activism, was founded in the 1960's as a secret society of comics and clowns dedicated to ending the Vietnam War through the use of political theater.
Split into simpler sentences: The Phurst Church of Phun is an organization that engages humor toward social change activism. It was founded in the 1960's as a secret society of comics and clowns dedicated to ending the Vietnam War through the use of political theater.