Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

Example input: At the beginning of the movie Gangs of New York, Priest Vallon tells his son not to wipe the blood of the blade after he's cut himself shaving, saying "The blood stays on the blade". I've watched the movie multiple times, but can never find what the meaning behind that phrase is. Anyone able to shed some light on this?
Example output: What's the meaning behind the phrase "The blood stays on the blade"?
Example explanation: A person gives a detailed description about a scene from the movie Gangs of New York and asks the meaning of a said phase in the scene. The question is summarized as What's the meaning behind the phrase "The blood stays on the blade"? for easy indexing the next time someone searches for a similar phrase
Q: At the end of the movie 3:10 to Yuma, we see Ben killed his teammate Charlie after failing to save Dan. We have seen that Ben tried to cooperate with Dan during the second half of the movie. So, was Ben feeling weak towards Dan? It's very unnatural given the role he has portrayed in the movie. Ben is a cold-hearted mass murderer. How come has he changed? And why did he try to save Dan and kill Charlie? Am I missing something?
A:
Why did Ben try to help Dan?