May Day's purpose is to promote

• Free access by each individual to information relating to his or hers health and well-being; and
   
• The right of each individual to make decisions about his or her own health, with the freedom to choose which kind of prevention and treatment they prefer.

'May Day': an emergency code word used internationally as a distress signal in radio communications, derived from the French m'aider, to signal a life-threatening emergency by groups, such as police forces, pilots, the fire brigade, and transportation organizations. 'May Day': also celebrated historically as the coming of springtime in USA and in Western Europe, where people due to earlier tradition carried leafs, flower garlands, and green branches, while dancing around a fertility symbol called the 'may pole'. (Definition: Wikipedia).