Dreaming of people fighting is a warning sign as per dream meaning and interpretation. The dream means you will witness something untoward. It also means things getting delayed due to activities of other people. It also means you will be forced to go to police or authorities to explain about something you have witnessed. Dreams of people fighting and you are not seen in the dream means something bad will happen in a place associated with you especially when you are away.
Dreams of people fighting and you are seen trying to stop it means you will have to play the role of mediator between neighbors or friends. It also means an old problem returning back to haunt you.
Dream of people fighting and you do not know these people means you will be late for work or important meeting in near future. It is a warning sign and you need to start a bit early to avoid being late.