YouTube star Logan Paul (if you’re not familiar, he has 15 million subscribers) uploaded a video on the platform over the weekend in which he appeared to make jokes in front of a body hanging from a tree during a visit to forest in Japan where people have been known to commit suicide. The footage amassed over six million views before Paul took it down.

Why it matters: Paul’s video was not caught by any of YouTube’s software or human filters, making it a prime example of content that should never have been allowed into wide distribution but that nonetheless eluded state-of-the-art artificial-intelligence systems.