Is it possible to edit materials after they have been shared on social networks?

Question

Programming

Case: advertising campaign - the user can create a postcard by uploading his picture and text. After creating a postcard, he shares the result to his social media accounts. Moderation occurs after sharing, so the created postcard with an obscene picture and text can get into the social network. Is it possible then to remove such shared pictures from social networks (or replace them with others, etc.).
If you solve this problem and you are a programmer, I can offer to realize your brilliant idea for money.

Answer 1

It will be possible to remove the navryatli, because the user himself, sharing the picture, adds the entry to his feed. That is, he must remove it. Agree, it would not be right if some third party (or site) would delete a certain post from your social media page. networks.
But with the replacement, the situation is as follows:
if the social. the network copies the picture to its server and points to its copy in the tape, then you can’t do anything;
if the social network uses a link to the original, then you can replace the original and all links will lead to a new image.
Unfortunately, I don’t know which link to store this or that social network. network.