The socialist tradition has a suitable term: "class traitor".
The ruling class is ruling, in substantial parts because they are better at cooperating than other classes (and are good at seeding discord in other classes). One aspect of ruling class cooperation is ruthlessly punishing their own class traitors.
I suspect that is part of what the whole saga is about.
In a sea of partisan squabble, you've said something truly worthy of thought. This has analogs in everything from organized crime to the interactions of genes.
Insider trading prosecutions are usually examples of either this phenomenon or the related effort to keep upstarts out of the executive class. Only certain people may steal from investors in public firms.
The ruling class is ruling, in substantial parts because they are better at cooperating than other classes (and are good at seeding discord in other classes). One aspect of ruling class cooperation is ruthlessly punishing their own class traitors.
I suspect that is part of what the whole saga is about.