Final answer:
The statement is true; William Haywood, leader of the IWW, was commonly referred to as 'Big Bill'. His leadership and the IWW's radical approach had a significant impact on the labor movement.
Step-by-step explanation:
The statement that IWW leader William Haywood's nickname was "Big Bill" is true. William "Big Bill" Haywood was indeed a key figure in the Industrial Workers of the World (IWW), which was formed in 1905. The IWW, also known as the Wobblies, was known for its radical approach to labor organization, advocating for direct action and the general strike as methods to overthrow the capitalist system. 'Big Bill' Haywood's leadership contributed to the reach and influence of the IWW's activities, such as the Lawrence Textile Strike and the Paterson Silk Strike. Despite the relatively small size of the IWW, its impact was magnified by the dedication and radical stance of its members and leaders like Haywood, fighting for workers' rights and solidarity against capitalism.