What was the purpose of Dr. King's "I have a dream" speech?

To stop racism between the dark skin people and light skin people. He wanted his own kind of people to be free as the whites.

The purpose of his "I have a dream" speech was to gain momentum with the human civil rights movement

It might be clearer to say: According to the dictionary, a squawk is not the same thing as a squeak. there's no need for them to be plural in your sentence and it's likely that, in the dictionary, they're listed as "squeak" and "squawk" singularly. when describing dictionary definitions it's best to use the form of the word that the dictionary uses for clarity.