Answer:
The oppression and segregation imposed upon African Americans.
Explanation:
In his letter to President Dwight D. Eisenhower dated May 13, 1958, Jack Roosevelt Robinson wrote of how it is hard for them to "<em>have self-respect and remain patient</em>". He admits that considering the "treatment" that his people, the African Americans in America have experienced and gone through, he believes it is hard for them to be patient and have "self-respect".
Jackie Robinson was a professional baseball player who played in the Major League Baseball (MLB). His letter to the then president shows his impatience against the former's interest regarding the cause of the Black community. Robinson would alter on become a huge propagator for the civil rights movement and be involved in the fight for the rights of the black people. By admitting that the president's advise to be patient and have self control can no longer be enough to calm the unrest that is evidently arising out of the oppression and racial segregation that his people had experienced and made to endure.
It is the voters (the s at the end) everyone isn't a plural it is indefinite.
I would say that the intended meaning of that hyperbole is that the speaker thinks that the colonists are being unfairly treated by the British government.
