The phrase “people die when they are killed” is often used as a sarcastic or humorous way to state the obvious. It is typically used in response to someone saying something that is very obvious or that everyone already knows. For example, if someone says “the sky is blue,” you might respond with “people die when they are killed.” This is a way of saying that the statement is so obvious that it doesn’t need to be stated.
The phrase “people die when they are killed” can also be used to make a point about the fragility of life. It is a reminder that death can come at any time, and that we should our time on Earth. The phrase can also be used to highlight the importance of safety and to discourage people from taking risks.