Social platforms must remain neutral carriers, not arbiters of truth and morality. Unless it’s governed by a democratic process.
Until then slap an 18+ tag on it and move on.
Your comment about LBTQ+ is interesting. That is most likely blocked in backwards countries where things like that are illegal, or various platforms would face consequences in those jurisdictions.
The purpose of the live-stream *is* the ugly thing. It is not a retribution from the state meted out on the perpetrator. It is propaganda. It is similar to ISIS beheadings.
I hope you did not mean that the propaganda is a good thing in this case.