"And when this happens, when we allow freedom to ring, when we let it ring from every village and every hamlet, from every state and every city, we will be able to speed up that day when all of God's children, black men and white men, Jews and Gentiles, Protestants and Catholics, will be able to join hands and sing in the words of the old Negro spiritual: 'Free at last! Free at last! thank God Almighty, we are free at last!'"
The above graph shows the frequency of the most common outlier words used by King in his speeches. These are words that appeared in his 100 most used words list, but not in the list of 100 most used words in the English language. We see words like "negro," "white," and "freedom" were especially common which showcases the civil rights messages in King's speeches. We also see that words like "love" and "God" were especially common in King's speeches which highlights the unique tone of his rhetoric.
The above graph shows the overall frequency of the most common English words as opposed to their frequency in King's speeches. We see that the words "and," "you," "I," and "have" are much more frequent in King's speeches than in general language. Other than that, none of these results are especially surprising.