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The boxing match known as the Fight of the Century between Muhammad Ali and Joe Frazier in March 1971 provided cover for the activist group to successfully pull off the burglary ; Muhammad Ali was himself a COINTELPRO target due to his involvement with the Nation of Islam and the anti-war movement .
 Muhammad Ali, Joe Frazier, Muhammad Ali, Nation of Islam
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Muhammad Ali, Joe Frazier, Muhammad Ali, Nation of Islam