I don’t know this question was hard
Answer:
Acri: bitter (acrid, acrimony, acridity)
Astro: star (astronaut, astronomy, astrophysics)
Aud: hear (audience, audible, audio)
Auto: self (autonomy, autocrat, automatic)
Bene: good (benefactor, benevolent, beneficial)
Carn: flesh (carnal, carnivorous, reincarnate)
:
In his "Letter from a Birmingham Jail", Martin Luther King Jr. resort to Socrates to highlight his practice of a fair form of civil disobedience and non violence, as a symbol or analogy to back up his interjection outlining the urge of awakening from the "dark depths of prejudice and racism" of society at that time.
That is called an allusion, when it refers to something else.