This is a NSFW video clip:
https://feddit.online/post/1304892/
Upon popular request, a direct link: https://lemmynsfw.com/post/34582782
To clarify these posts are presumably not doing anything wrong, the problem is that they’re not getting blurred in the all feed.
A PieFed admin can disable not-logged-in users from viewing NSFW content. IIRC, this was added after the recent UK laws about NSFW content.