Regardless of whether it has any certain prototype, it is clearly a courageous statement having everything to do with the world we live in. Everyone's aware of that just as everyone in the German's nameless town knows David is innocent. The thought is embodied in red paint on a bedsheet hanging out from David's balcony: "We all know who the real thief is." When the investigator requests to take it down, the professor says: "Show me the article in the Constitution that says I can't dry my laundry."
Political critique is not the only layer to the story. House Arrest in many ways takes after a tradition of describing little men getting stomped on by the system. Having been led to the boiling-point, they rise against the usurper, rise above themselves. The movie starts with Sartre's quote: "Human life begins on the far side of despair." That side is Pushkin's Evgeny standing up to the bronze giant, that side is Gogol's Akaky Akakievich haunting those in power, that side is David throwing down the gauntlet. Like a Don Quixote, the professor dives deep into literature and, detached from reality, forgets fear (referred to as common sense by many).