Six Shooter (2004) on Netflix

Plot summary

A doctor breaks the news to Donnelly that his wife died at three that morning and then leaves him alone at her bedside, the hospital busy with two cot deaths and a woman whose son shot her. Donnelly places a photograph of David, the pet rabbit, in her hands and walks out into the early light to catch a train back to Dublin. Across from him sits a chain-smoking young man known only as the Kid, whose coarse remarks about the people in the carriage quickly draw anger. A couple in the next seats are tense with each other, and the Kid's manner sets the husband against him.