Imagery can make something abstract, like an emotion or theory, seem more concrete and tangible to the reader. By using imagery, writers can evoke the feeling they want to talk about in their readers...and by making their readers feel, writers can also help readers connect to the messages in their work
Equality is most cleary describied in this excerpt - Kennedy mentions both segregation and discrimination and that is is creating a 'rising tide of discontent' and men of good will and generosity should unite to solve the problem.
