The Mallet (1977)

In a futuristic, antiseptic food factory, workers select healthy chicks, while the rejects are carried along a conveyor belt until they are crushed by a mallet and drop into a garbage bin. A single black chick appears among the yellow and is shoved toward the garbage bin. Before the mallet strikes, the gasping chick rebels.

Unfortunately the movie The Mallet is not yet available on HBO Max.