Territorial behavior in humans?
From encyclopedia britannica


  Territorial behaviour, in zoology, the methods by which an animal, or group of animals, protects its territory from incursions by others of its species.


Following, this definition, yes territorial behaviour exists in humans. Here are three simple examples drawn from different (western) cultures





You seem to be confusing territorial behaviour with general, aggressive behaviour. Whether or not the behaviours you describe qualify as territorial behaviour requires one to make a psychological study to determine whether the individuals had a notion of territory that they wish to defend.