<P> An injury to one is an injury to all is a motto popularly used by the Industrial Workers of the World . In his autobiography, Bill Haywood credited David C. Coates with suggesting a labor slogan for the IWW: an injury to one is an injury to all . The slogan has since been used by a number of labor organizations . The slogan reflects the fact that the IWW is "One Big Union" and organizes skilled and unskilled workers . Despite the reduced number of organized workers today, the slogan is still popular with labor unions and other organizations . </P> <P> The expression is similar to, and may be derived from, a slogan popularized in the prior quarter century by the Knights of Labor, "that is the best government in which an injury to one is the concern of all". </P>

Where did the slogan an injury to one is an injury to all come from