SawModern Times (1936), with Charlie Chaplin. It was ok, a lot of slapstick, very episodic, heteronormative plotline. But at the beginning, during the factory sequence, there's an extended scene featuring a shirtless muscle guy. Shirtless + muscle is very rare in the 1930s.
He turns out to be Sammy Stein (1905-1966), a pro football player and wrestler who had small roles in 56 movies from the 1930s through the 1950s, usually as "Gangster #1" or "Henchman." If you wanted a guy to appear shirtless in your movie, you called Sammy Stein.