Chen Zhen (Bruce Lee) beats up all the students of a Japanese martial arts school at once

Scene from the film Fist of Fury (1972)
Chen Zhen leaves his homeland of China and relocates to stay with family in Thailand. Chen, who swore to his mother that he would avoid violence in his new life and even wears a necklace to remind himself of this oath, is tested when he confronts trouble at his job. When he finds out the factory he works at is a cover for a drug ring, and his family members are murdered by members of the gang, he can avoid fighting no more and decides to confront his corrupt boss.

Director: Wei Lo
Writer: Wei Lo
Stars: Bruce Lee, Nora Miao, James Tien

[dakotasnow]

It's fascinating watching action clips from the 70's of all genres. It doesn't match the over-the-top action scenes in the present day, it's closer to what a fight would be like in the real world.