https://www.cnbc.com/2019/04/22/leica-says-it-wasnt-behind-ad-depicting-tiananmen-square-protests.html

A promotional video for camera maker Leica showing photojournalists covering global conflicts — including the Tiananmen Square protests in China in 1989 — has resulted in the company's name being banned on Chinese social media and the marketer denying responsibility for the video.

The five-minute film is called "The Hunt." It depicts photographers covering conflicts, including one capturing images of the "Tank Man," who stood in front of a convoy of Chinese military tanks the day after the Tiananmen Square massacre in which Chinese military attacked pro-democracy demonstrators. That subject has been widely censored in China. The video concludes with the image of Leica's logo.