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"Was not Jesus an extremist for love.. Was not Amos an extremist for justice..Was not Paul an extremist for the Christian gospel”(King 281).

Dr. King uses the phrases “Was not Jesus an extremist for love...Was not Amos an extremist for justice...Was not Paul an extremist for the Christian gospel” which he is trying to emphasize an idea and stir the listener's emotion. The idea he is trying to emphasize is that him mentioning these people that were extremist were known for making a change for the right things.King wanted people of color to be treated right.He wanted whites to see the change he was trying to make, but he knew that they wouldn’t and them seeing he was making an impact they would try and make him stop. These parallel phrases evoke emotions: by making people realise that if these people can make a change for the better, king can too.

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“Will we be extremists for hate or for love? Will we be extremists for the preservation of injustice or the extension of justice?”(king 281).

For instance, Dr. King uses rhetorical questions after using multiple famous historical figures that were extremists for social change against discrimination and were right. This makes his audience question if they want to continue to spread justice or continue to be injustice.

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"This nation can not survive half slave and half free" (Dr. King 281).
This is a form of antithesis because it is comparing being half slave and half free. Being half free or half slave a nation still won't survive because the white moderate will still treat the colored with disrespect. No matter what or who you are in this nation you can only be one, slaved or free.

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Allusion

“Love your enemies, bless them that curse you, do good to them that hate you, and pray for them that despitefully use you” (King 281).
In this example of allusion, Dr. King uses the bible to reflect his logic towards the clergyman and this would make his audience empathize to keep loving people, even though they are mistreating you. Rather than just spreading hate.