180318
The United States Supreme Court ruled in 1942 that fighting words that " tend to incite an immediate breach of the peace " are not protected speech , but later cases have interpreted this narrowly , especially in relation to law enforcement officers .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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