From a Washington Post story by Drew Harwell headlined “Hamas vows to broadcast hostage executions. Tech firms can’t stop them.”:

Hamas militants have vowed to broadcast their executions of Israeli hostages on the internet. Recent history shows there’s virtually nothing tech companies can do to prevent that from happening.

Live-streamed murders in Buffalo and Christchurch, New Zealand, remain visible on the web and have been viewed millions of times, long after the mass killings took place. Companies’ efforts to stop access to violent videos have been stymied by an open internet that makes it easy to watch, save and share videos at viral speed — and by the changing strategies of killers and propagandists, who can use a network of distributed online services to ensure the videos remain forever within reach.