What is the picture "the hand that will rule the world-one big union" about? i think it is about workers unions/rights but i'm not

The power of workers uniting.

Explanation:

According to IWW ideologues, industrial unionism was the logical outgrowth of modern economic development. The displacement of skilled workers by modern machinery and the monopolization of entire industries by trusts had made the practice of craft unionism obsolete. Industrial unionism aimed to reorganize labor in accordance with the scientific principles of capitalist development.

However, the IWW viewed industrial unionism as more than just an adjustment by labor to present conditions. It was also preparation for the future society the IWW intended to create. Industrial unionism provided a structural blueprint for the continuance of production following the overthrow of capitalism. Being organized industrially, a general strike initiated by the workers would lock out the employers and allow for the peaceful conquest of the means of production through which the workers would control industry and use the world's resources to benefit the many instead of enriching the few.

Thus, the IWW linked the everyday struggle for better working conditions with the revolutionary goal of overthrowing capitalism and creating what IWW general secretary Bill Haywood referred to as the "Workers' Co-operative Republic."

straight down to hell mate