Probably between 2016 and early 2019, I watched a video that was about disturbing internet content. I don't know whether it was by a popular Youtuber or whether it was part of a series. In a part of the video, the video's creator explained how there is an urban legend about a series of disturbing videos. Here is what I remember of the video creator's description of the disturbing videos:
1) The first video showed several pigs in a small room. 2) The second video showed the same thing, but ended with a man entering the room and throwing an unidentified heavy object onto the floor. 3) There was at least one other video between the second video and the last one, but I don't remember what it showed. 4) The last video showed two or three people walking around in the room on all fours, wearing real pigs' heads on top of their own heads. They were possibly being forced to do so by the man from the second video.
I'm interested in this subject because I have watched several "iceberg" videos recently, but I have yet to hear anything like these disturbing pig videos get brought up in any of the icebergs.