From WhyWeProtest.net: because good vogon should never go to waste.
Based on this poem:This mask,is permanent.This mask,is inevitable.It can be happy,It can be sad, or mad.It can show no emotion,It can show any emotion.But this mask,is the only face we see.We do not see what lies underneath,the truth that lies within.This mask is worn,with friends and family.In public or in private,even when you're by yourself.When we were created,this mask was too.Our outer face,known as our identity.But when we were created,so was our true face.And this true face's name...Our soul.Our soul,Our heart,Our mind,together; combined.This is our true face,our true feelings,our true life!No one sees this face.Consciously you realize,it can happen anytime, anywhere.Sub-consciously,you deny it.We are Anonymous.We are Legion.We do not forgive.We do not forget.Expect us.-dot dot-
http://www.poemhunter.com/poem/the-faceless-mask/