Can Yahoo Answers not take action against derogatory , defamatory , sarcastic and humiliating answers ?

I was reading answers to one good question on Mahatma Gandhi. It was painful to see the answers. The "intention" of the answerer was to make mockery of the question and asker. There are many questions for which you get stupid , sarcastic , ridiculous , irrelevant , defamatory , derogatory , humiliating and insulting answers. When Y!A is so prompt about violation of QA format , can they not include in their community guidelines answers which are falling in above criteria ? What are your views ?