Upton Sinclair's "The Jungle": Great Story, Bad Communist Manifesto

Stockyards because of a work-related injury, had to work in the fertilizer department to support his family, which he lost any way after his wife died during childbirth.
SPOILER ALERT
The book ends with Jurgis doing sh*t work for some Socialist egghead. Jurgis becomes a socialist and it ends with a boring socialist manifesto, making me wish it had a happier ending.