To central point of an argument is the claim, or proposition. what is kings claim in this speech? what evidence does he cite to support his claim

Martin Luther King, Jr. in his speech “I had a dream”, claims that a hundred years later, the “Negro is still not free”. He based it on the racial discrimination that oppresses the rights of African Americans. He mentioned about police violence or brutality among the Negros, the signboards that say ‘for whites only’, the no right to vote policy, and all injustices that African Americans experienced. This speech encouraged the black community to take social and militant action to fight for their rights during the Jim Crow Era in 1960s.

the answer is a welcs

i wonder if it is possible to place reagans testimony and paragragh 18, so we can compare and contract the ideas in the text.