Answers to my question (3)

9. Does any singer or rapper complained about music censorship in public , what’s the result of that?
  Many metal  singers  complained about music censorship and PMRC .  Especially Dee Snider, a famous heavy metal  singer,  is devoting himself to aganist the music censorship and PMRC since 1980s.
 Here is a video about Interviews with artists talking about music censorship and PMRC. 
Censorship in the music business - (PMRC 25 years, Walmart US). 2009. Film. 25 Jul 2012. <http://www.youtube.com/watch?v=MlPTTweVi9o>.