Final answer:
The quote from Ralph Ellison's Invisible Man, highlighting racial injustice is "You ache with the need to convince yourself that you do exist in the real world...you strike out with your fists, you curse and swear to make them recognize you. And alas, it’s seldom successful.", reflecting the protagonist's struggle for recognition.
Step-by-step explanation:
A poignant quote that depicts racial injustice in Ralph Ellison's Invisible Man is:
“You ache with the need to convince yourself that you do exist in the real world...you strike out with your fists, you curse and swear to make them recognize you. And alas, it’s seldom successful.”
This statement reflects the protagonist's desperate struggle for recognition and validation within a society that largely diminishes and ignores his existence due to the color of his skin. The racial inequality faced by the narrator is a persistent theme throughout Ellison's work, fundamentally questioning the visibility and humanity of African-American individuals in a pre-civil rights America.