You need to consider what is actually the “citizenry” of a society. In your example it sounds like the nobles are the citizens and the peasants are non-citizens. Using the term “noble” and “peasant” confused the matter with inter class or socioeconomic concerns.
What you’re describing seems to be unequal justice for the poor rather than an in group or out group dynamic but it’s not clear because you’re mixing ideas. Note that in Ancient Roman society there wealthy Plebeians and poor Patricians.
The Greeks had a similar arrangement in their various city states with regards to citizenship and non-citizenship (the helots being the most legible example of this).
I would encourage you to consider that you are at least an order of magnitude not thoughtful enough to really understand what we’re talking about and keep that in mind when it occurs to you to use insults.
> You need to consider what is actually the “citizenry” of a society. In your example it sounds like the nobles are the citizens and the peasants are non-citizens. Using the term “noble” and “peasant” confused the matter with inter class or socioeconomic concerns.
In-group and out-group dynamics go far, far beyond citizenry. It is clear that you wish to declare all you consider to be undesirables as non-citizens to justify your discrimination against them, but this is not actually a useful model for anything.
> What you’re describing seems to be unequal justice for the poor rather than an in group or out group dynamic but it’s not clear because you’re mixing ideas.
No, I am talking about the literal basis for modern liberalism's existence. Liberalism has gradually expanded to encourage equality between more types of people, but the origin was in anti-royal and anti-noble sentiment, in opposition to birthright privileges and an immutable social hierarchy. You appear to be woefully ignorant of history, which is understandable for a tiny little lizard, but you should perhaps not speak of things you know nothing of.