Perhaps the content should just be hidden and hard to access to reduce vitality but still allow people to view if they want? That wouldn’t satisfy everyone either though.
I agree with you, but to play devil's advocate, without public knowledge and access to the media directly, what incentive or pressure do terrorist organizations have? If the whole point of these acts is to instill fear, if they are not well-known the impact is limited. I can see that argument but don't have a good rebuttal.
Just like poker, terrorism isn't a thing that exists in a vacuum: it exists inside of, and in relation to, wider society.
The existence of the war crime allegations isn't being removed.
People horrified by the war crimes themselves provide the incentive/pressure. Photos/videos don't add to it, they just confirm the evidence.
I really don't think any victims' families are saying "oh well, because we can't see the videos anymore I guess we won't bother the government after all".
Governments generally only respond to public pressure or existential threats to their power and control and revenue, and little else.
Oh, but it is. The direct witnesses' accounts are minimized and ridiculed for lack of evidence, then the witnesses stop talking about it (normal ones; the crazy ones keep ranting about it forever) and the matter is totally gone within a generation. A historian might dig it up a few decades later to make a career and by that time it's too old to be relevant.
Consider these major events before they were part of accepted reality: NSA spying, coronavirus, the Holocaust, Uighur ethnic cleansing, Tuskegee syphilis experiments, etc.