Q: Is a fist an action where a hand has the fingers curled into the palm and the thumb retracted? ¶
A: Yes, and displaying the knuckles.
Q: Are fists taught in martial arts like karate? ¶
A: Yes, and kung fu, and taekwondo for the process of punching and striking.
Q: Is a fist virtually unknown amongst other primates? ¶
Q: Are fists also well-known revolution symbols — as "persistent symbol[s] of resistance and unity"? ¶
A: Yes, and in the form of a raised fist.