Answer:
Injustice.
Frederick Douglass in his speech What, To The Slave, Is The Fourth Of July touches on the issues faced by black slaves, the injustices they have faced, and the duplicity and injustice of a country celebrating "independence" when there are slaves.
Answer:
In Flowers for Algernon, the mentally handicapped Charlie Gordon is transformed by a surgery that allows him to become intelligent. The short story and later-developed novel explores themes about the cycle of life, the limits of science, and whether knowledge is truly more valuable than happiness.
Dogs would be my first answer.
(Pets)
I don't know if you're referring to the empty box when texting, but it represents a character or emoji that your device is not capable of processing. For example, Apple devices have emojis that Android devices can't process, so Android users see that box (square).
