“It is often very illuminating, therefore, to ask yourself how you got at the facts on which you base your opinion. Who actually saw, heard, felt, counted, named the thing, about which you have an opinion? Was it the man who told you, or the man who told him, or someone still further removed? And how much was he permitted to see?”

“When he informs you that France thinks this and that, what part of France did he watch? How was he able to watch it? Where was he when he watched it? What Frenchmen was he permitted to talk to, what newspapers did he read, and where did they learn what they say?”

Public Opinion, chapter 2
Walter Lippmann

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One may obviously substitute Ukraine, Russia, Gaza, and Israel here.