Why?

Today I attended a Regional conference.  The topic came up about the media reports and public sharing of  MISinformation about Mormons,  and why Mormons don't lash out or go on the defense.  So I ask you this question: 

In your own personal opinion, Why don't Mormons speak up and try to change peoples perception about them when misinformation is being spread?

Please comment and share your thoughts.  You can remain anonymous if you wish.