If "No one owes you anything," then you also owe nothing to a society that works against you, including allegiance, civility, or pacifism.
A society in which it's everyone for themselves, that refuses to care for one another, is no society at all. Then everyone acts shocked and horrified at someone who understandably snaps, like modern western culture doesn't run entirely on schadenfreude.
That was the crux of the idea of a social contract, which is long dead in the US. Now people line up to revel in the suffering of their fellow citizens with "well you were stupid to do xyz in life, so you deserve your suffering haha."
How you conduct yourself is a reflection of you not of the people treating you poorly. Have some pride in your own conduct and let shitty people suffer consequences of their behavior.
I feel like you think this until someone who 'knows someone' or otherwise benefits from nepotism gets to walk all over you and the facade of a system breaks down.
The fact alone that the courts in the us were packed with political interests during 45 already means the system is broken as your case could be "made an example of" at any time at any donors behest. That's the fundamental form of redress in a civilized society and we can't even guarantee that anymore.