https://motherboard.vice.com/en_us/article/pajyvb/youtubes-bad-anti-conspiracy-algorithm-links-notre-dame-fire-to-911-attacks

On Monday afternoon, as people around the world started tuning in to YouTube live-streams of a massive fire that’s destroying the Notre Dame cathedral in Paris, some viewers noticed something odd. Beneath some of the YouTube videos, the platform inserted an Encyclopedia Britannica link and preview for the September 11, 2001 terror attacks.

At least two YouTube live streams from two major media outlets—CBS and NBC—included this link.