Ability of film to withstand image destruction?

Jedidiah Smith said:

Overall, it sounds like processed film, especially a B&W negative, is extremely robust. That's pretty good to my way of thinking.

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That didn't stop various political leaders from erasing people from the visual record when it suited them, long before Photoshop!

Wow, that's a crazy link. I looked at them all...makes me sick. No wonder average folks seem to place very little value on photography. May as well be a graffiti artist with a spray can...