Despite near-constant attacks from the Right, the ability of individual workers to organize to speak as one voice is as American as the First Amendment (Right to Peaceably Assemble, specifically) and is responsible for many of the bedrocks of our way of life we enjoy today.
“Organized labor was critical in the fight against child labor and for the eight-hour workday and the New Deal, which gave us Social Security and unemployment insurance. Union workers sacrificed in America’s historic production effort in World War II and pushed for Great Society legislation in the 1960s.”
Read more here: https://www.theatlantic.com/business/archive/2014/09/when-labor-day-meant-something/379307/