I have noticed that at some point when you try to point out to people that the wars they support (such as the US waging war all over the world or Israel unleashing assaults on Gaza) lead to the deaths of large numbers of innocent people, these people will sometimes resort to the cliché that “War is hell”.
This is said with a kind of world-weary attitude of condescension towards the opponents of war, as if the latter do not have the sophisticated understanding of the former and are naïve idealists who do not comprehend how the world works, and that one has to put up with some suffering for the greater good. But you will notice that the people who say such things are usually the people who are at the giving end of the hell, never the receiving end. In other words, hell is fine as long as other people, the ones who do not belong to your own tribe, are the ones consigned to it. I doubt that anyone one who has had loved ones blown to bits by drones, missiles, and land mines and the other tools of war console and resigns themselves for their loss by saying ‘war is hell’.
A similar phenomenon can be observed for that other cliché “life is unfair”. This is invariably brought out by people who are the beneficiaries of an unfair system and is meant to tell those at the losing end of it that they should stop complaining about unfairness and simply suck it up.
I am sure that there are other trite phrases that serve similar functions in the service of power and maybe readers can add them in the comments but these two are the ones that I hear the most often and they set my teeth on edge.