> Today, physical beat-downs are filmed and uploaded to school-based fight groups on Instagram and other platforms—where they live on more or less indefinitely (sometimes they’re forced down, but they inevitably seem to crop back up, according to educators).
If a piece of content is taken down, it should remain down, and it should be the responsibility of the company hosting that content to ensure that it does not reappear.
If the 'cost' of not complying (regulation, fines, etc) is large enough, then there's an incentive to invent cost effective ways of complying with this requirement.
Right now, there's no real benefit to the social media companies to invest in this area. It's too easy for them to say both 'the content is user created and not our responsibility' and 'when we are informed about the content we remove it'.