Depending on the jurisdiction taking screenshots might be a crime in itself. And I doubt that this would make a good news item, it's not like the newspapers can reprint the material in question or the url, so it's unlikely that anyone who likes Facebook would find the article convincing.

A criminal conviction of a Facebook employee would make a good story, but that is much harder.

A screenshot of Facebook's message that it's not against their standards, I mean. That should be easily reprintable, unless it contains the original image.

What would that screenshot prove, without the original image next to it? All it proves was that something was reported, but Facebook disagreed. Could be something horrific, or it could be a picture of a tree. There is no shocking news story here.

That line of argument leads to never being able to report anything. Just report it, and let the police and journalists figure out the details.