He really used figurative language to express himself.
Explanation:
Dr King had to speak, but he knew he couldn´t beas splicit as he wanted to. He had to use figurative language like, "seared in the flames of withering injustice", "manacles of segregation and the chains of discrimination", "synphony of brotherhood". These and other ones were use by him to express his hates against what neggro people had been suffering since the first one came to America.
