it doesn't mean your a violent person.

our emotions often drive our dreams, so if someone is making you feel angry, then this emotion will come out in your dream, especially if we are suppressing that emotion a lot during our wake time, that emotion will be in our subsconsciousness and will rise up to the surface in some way

thank your lucky stars that the anger is coming out in your dreams, just enjoy your dreams, knowing that you wouldn't do this in real life.