Based on

Movies like Occupation (1991)

A small man sits on a station bench. A chunky, initially polite guy joins him, uses his newspaper, eats his travel provisions on the train, follows him and harasses him on the bus, in the cab, in his house, makes himself at home. When the harassed man calls the police, the patrol arrests him and the ruffian triumphs. The little boy is released. Now he is helplessly at the mercy of the intruder's harassment and is thrown out the door by him.