We are in the process of updating our TOS. I agree, this term is too vague. What is actually not allowed on 3speak is showing extreme gory deaths. Showing fights, protests that may have police brutality, etc, are all fine. We will update the TOS soon to reflect these conditions.

"Youtube isn't this restrictive as they allow beheading videos and war footage" - Youtube does not allow beheading videos. https://support.google.com/youtube/answer/2801964?hl=en -Promoting "Violent Events" are banned on youtube. Maybe you can show those types of videos on youtube if you blur out the gore (which I still doubt) - but if you blurred the gore you would be allowed on 3speak anyway.