And in Chicago, a celebration is being held this weekend to mark the 100th anniversary of the founding of the IWW, the Industrial Workers of the World. The union formed to promote worker solidarity against the employing classes. The Wobblies — as they were known — called for the abolition of the wage system and the formation of one giant union. Early members included Big Bill Haywood, Eugene Debs, Lucy Parsons, Mother Jones and Joe Hill.