121967
Many of the writers were radical : if they were not members of the Communist Party USA , they were sympathetic to the cause .
 Communist Party USA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Communist Party USA