Why do people make fun of the Hare Krishna movement?

They just want people to be happy! The Vedas do not contradict any other Holy book, they are sufficiently ambiguous to be in agreement with all religions! A group of people out in the streets saying people should avoid the self-destruction of your bodies and try to seek happiness and fullfilment for your SOUL not for you BODY, and yet people make fun of them. I don't understand it.