Industrial Workers of the World
The IWW pushed many unique ideas when it started. It disliked the American Federation of Labor's way of splitting workers by what kind of work they did even if they worked on the same job. Instead, it believed that all workers should organize together in "one big union" in their industry and as workers altogether. The IWW also focused less on winning contracts and more on giving workers more power against bosses on any job they work at.