In the scene, a character played by Bruce Lee's co-star, Keye Luke, was shown bowing to a character played by David Carradine. Bruce Lee saw this as a display of disrespect to Chinese people and felt it perpetuated harmful stereotypes.
He reportedly objected to the scene and refused to shoot it. While the story has been recounted many times, it's important to note that it's not definitively confirmed, and the incident wasn't publicly reported at the time.
Regardless, the anecdote highlights Bruce Lee's strong commitment to challenging negative portrayals of Asian people in Western media.