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Cain then moved away from criminology to look at “ The main themes of Marx ’s and Engels ’ sociology of law ” then she returned to a look into policing when she wrote “ Racism , the police , and community policing : a comment on the Scarman Report ” .
 Cain, Marx, Engels
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cain, Marx, Engels