Might is right is the norm everywhere at every level not only international politics. The corrolary is that democracy and human rights are a joke.
You are quite wrong, of course, as any reasonably informed observer will know. Whether you're just ignorant or ill-intentioned: It's so easy to fire off these poisonous comments whose effect is to undermine and deligitimize the norms and institutions that keep things reasonably okay, as imperfect as they are. I hope you will never have to yourself experience the difference that you so easily dismiss.
In any case, I don't think either is true, formally or for practical purposes. It also does not follow that accepting "might is right" on the international level makes a farce of the ideas of democracy or human rights, whether one regards it as a desirable state of international affairs or as an undesirable fait accomplit, as we both seem to agree. I will not bore us with logical formalities and stay on the practical side of things:
Because, if you allow any group of actors, or the predominant state of things in any place, on any level, to spoil the whole concept simply by them not adhering to it, then indeed you have needlessly given up everything without even trying. Nothing better can exist when you let bad actors doing bad things define the floor and the ceiling of what can be.
Islands of decency exist. They are flawed, and yet they are the best and only real thing we have in this regard. They are under threat, as you say. Undercutting them by pretending that they have no worth or indeed value at all only plays into the hands of their enemies.
You will also find that force and violence has been done in the name of every good idea that ever came about. If you let good ideas get "ruined" whenever someone uses them as a shield for bad ends, you will have none left. Nothing at all. Just because you gave the bad more power than the good. That is not practical at all, to say it mildly.
Would your logic apply to all the people of Gaza, would them resisting qualify as "undermine and deligitimize the norms and institutions that keep things reasonably okay"
Is genocide reasonably ok?
Of course not, and nothing I wrote leads to that conclusion.
Rejecting the notion that "everywhere at every level not only international politics... democracy and human rights are a joke" does not mean that things are non-horrible everywhere, at every level.
Having a way for the public to regularly and non-violently change leadership and lawmakers, having checks and balances between the holders of power, and certain norms we strive towards is the only thing that gives us a chance at preventing authoritarian, absolutist and arbitrary rule - within the constraints where these things have effect.
That they do not work everywhere and do not work perfectly is a sign that we continue to need them. Concluding the opposite, that they're entirely useless, is not only dangerously foolish and fatalistic, but also logically fallacious.
It's an argument often used by those who wish to undermine these norms and institutions. I don't automatically think that this is you, but it might be interesting to examine your line of reasoning and what makes you read things in my previous response that are not there.