Answer:
There are any number of lessons to be taken from the events of Sept. 11, 2001: the sacrifices of the first responders, the stories of those who were killed, the emergence of terrorism as a critical threat to the United States.
Politically, the lesson cited most regularly is what happened in the immediate aftermath of the attacks. Americans came together, stood as one in support of one another and the nation. “The days after September 11th” has emerged as its own political shorthand for a halcyon moment of comity in the political conversation, a thing to which we might always strive.
Explanation:
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The quote by Martin Luther King Jr. means that the value or character of a man is related to the courage he demonstrates in difficult times when he knows he owns the truth and must endure in spite of the obstacles he is facing. King said this words in his last speech during the Civil Rights Movement, before he was assassinated in 1968.