us

one of us a person recognized as an accepted member of a particular group, typically one that is exclusive in some way.

us and them expressing a sense of division within a group of people.

☞ The concept is also formulated as them and us. The underlying thought is generally that 'us' have a grievance against 'them'.

2019Guardian Brexit plays out a conflict between Them and Us, but it is surely obvious after this week that the problem is not with Them on the continent. It's with the British Us.