Question (Spoilers!)
Why did the police officer shoot himself?
I don't think this was never made clear in the movie.
No clear reason is given. The captain talks about himself and his problems to Juliette in several scenes, but in the end, it's up to the audience members to interpret the reason for the suicide in their own way.
shareThe most obvious reason that comes to mind was his unhappiness at very rarely seeing his child
You're an errand boy, sent by grocery clerks, to collect a bill