Device #1- Metaphor(Paragraph 1, Sentence 6)
"Negro is still badly crippled by the manacles of of segregation and the chains of discrimination."
This statement was appealing to the African Americas not being free.
Device #2- Repetition( Paragraph 4, Sentence 3)
"Now is the time to make real the promises of democracy."
You can see through out that paragraph he continued to use "now is the time".
Device#3- Pathos(Paragraph 7 Sentence 3)
"Let us not seek to satisfy our thirst for freedom by drinking from the cup of bitterness and hatred."
This statement was appealing to how the entire movement was bitter and having hatred towards African Americans and how the entire movement became violent.