While just about everyone involved in funding this film hailed from the political right, the cartoon was clearly aimed at a union-friendly working-class audience; it defends independent trade unions and warns that state factories will be able to impose harsh speed-ups with impunity. 
In a precursor of sorts to the Hard Hat Riot, it ends with a blue-collar worker beating up a socialist:


(For past editions of the Friday A/V Club, go here. I haven't featured any of the Sloan/Harding/Sutherland films in the A/V Club before, but their 1948 effort "Make Mine Freedom" has turned up elsewhere on this website.)