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: In the Hollywood horror movie It(2017), which is based on a novel by Stephen King, the young girl Beverly who stays with her abusive father is shown as cutting her hair in front of mirror.  Why does she do this?  What is the significance of this scene? I want to know if I have missed out any other significant detail related to the scene.
A:
Why Beverly cut her hair?