There are hundreds of them (just search by hashtags in the posts above). Of course same set of videos/pics repeated over & over, but my point is that such stuff is present all over Twitter & FB and anyone accessing those platforms can stumble upon them. Twitter doesn't even seem to put them behind a "Violent/NSFW" click-through.
I don't see how nudity can be more damaging or pernicious than such content.
I'm not sure of the "kids will suffer because of violent images" idea tho, we were shown a crap ton of terrible imagery from WWI/WWII/Holocaust/Vietnam when I was in middle school, and if anything I thought it was a good thing.