The reason why Robinson includes the descripiton of African American is: B: to point out that African Americans have greatly suffered for far too long
First, they have to endure the excruciating centuries during the period of slavery which caused a lot of death and suffering. Even after the abolitionists managed to created legislation to free the slaves, they still have to face racial injustice, especially shown during the period of racial segregation.
Responsibility.
Hope this helps!! :)
