What is the music video with a boy and he shoots an old guy?

The music video you're referring to is likely "The Man" by The Killers. In the video, a young boy shoots an older man in a metaphorical representation of power dynamics and the passage of time. The visuals convey themes of ambition and the challenges of growing up, juxtaposing youth and age. The song itself explores themes of masculinity and self-identity.