Answer:
anaphora to emphasize the lack of equality.
Step-by-step explanation:
Anaphora is used by repeating the first words of a sentence to emphasize the argument that we are trying to expose, in thise case, President Kennedy tries to underline the unequality that african americans and other races lived in the United States and the lack of progress in civil rights, by repeating It ought to be possible, he foresees a future, not so far away where people of any color and races are equal in every way.