What does martin luther king jr predict will happen if justices is denied for african americans

King predicted that there would be no future if justice is denied for African-Americans.

Explanation:

Martin Luther King urged to his fellow men to stand against the Britishers and fight for the racial discrimination they are going through. He always asked them to fight for their civil rights. They should not remain oppressed forever. He believed that each person deserves freedom in his life.

He predicted that if justice is not given to the African-Americans then the country will be divided into two sides who will be conflicting and nation will not progress in this case. African Americans would continue struggling in their life.

often a noun phrase is just a noun or a pronoun:

people like to have money.

i am tired.

it is getting late.

the third paragraph is your answer,

"but, in a larger sense, we can not dedicate — we can not consecrate — we can not hallow — this ground. the brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. the world will little note, nor long remember what we say here, but it can never forget what they did here. it is for us the living, rather, to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced. it is rather for us to be here dedicated to the great task remaining before us— that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion—that we here highly resolve that these dead shall not have died in vain—that this nation, under god, shall have a new birth of freedom—and that government of the people, by the people, for the people, shall not perish from the earth. "