http://www.europafilmtreasures.eu/PY/37 ... an_song%27A chubby police officer waddles into a cabaret scene. He sings the Schutzmannlied, a tune that makes fun of the self-importance of the Berlin police and its folly. That’s what he has in his head, the po-po-police officer! And he puts his heart into his work! Oh yes! And gallant with all that!… In a row behind him, his uniformed colleagues accompany him while dancing like in a real music hall show.
This scene is part of Donnerwetter Tadellos!, an extravaganza that was a phenomenal success in Berlin at the beginning of the 20th century.
At three minutes long just watch it. 104 years old movie with sound and humour.