Watch Dief! for Free: How to Stream the Movie Online at 123Movies. . This documentary short is a portrait of Leader of the Progressive Conservative Party and 13th prime minister of Canada, John George Diefenbaker (1895-1979). Diefenbaker's political career spanned 6 decades. When he died in 1979, his state funeral and final train trip west became more a celebration of life than a victory for death.