What is that movie?

He was probably a fat man wearing a suit, with short, gray hair, and older. He was probably the main character, and he was wearing suspenders. The man went to the office one day, but the man he was talking to had his back to him and seemed uninterested. When the man turned around, the main character had already turned his back and left his office. At night, he was either in his office or at home, drinking something like alcohol, and staring at some documents or something with a serious expression. The main character was sitting alone on a bench in a park or somewhere in the daytime, wearing a suit, and there was a scene where he wanted to go to the toilet, but couldn't find one, and there was a scene where he was defecating in the open, and the main character's face was depicted in close-up. It looked like he was defecating in the open. The man looked older, fat, with short gray hair, and I don't know if he was a detective, agent, or prosecutor, but I've written here as much information as I know. It's a color movie, and I saw the clipping on YouTube in 2011, so it was an earlier work.