Solid western produced martial arts action series about rival gangs in 1920s San Francisco. Western production but clear heavy influence from Chinese martial arts flicks. Decent representation of the racism of the era. Particularly the Irish gangs in their transition to folding themselves into the white supremacist hierarchy. Very good coreography with none of the rapid cut bullshit in most of western action media. Also has a great cast.

(If you do watch it, it is an accurate portrayal of 1920s SF so CW: All the slurs, SA, and probably more I have not encountered)