Bruce Lee is shouted down when he critiques traditional martial art at a karate convention, then he claim he can win over any fighter present in less than 1 minute. The public make fun of him and demand he prove his claim. Epic fight and winning ensue...
At a college gym, Bruce outwits and outmatches a Jerk Jock and his friends, who are fueled by anti-Asian sentiment from the Korean War, yet before leaving him, he tells him:
Bruce: Sorry about your dad. Those were Koreans. I'm an American.