UNESCO World Press Freedom Prize Call for Nominations. This Prize was established by UNESCO’s Executive Board, in 1997, in honour of Guillermo Cano, a Colombian journalist who died in the exercise of his profession. Its purpose is to reward each year a person, organization or institution that has made a notable contribution to the defence and/or promotion of press freedom anywhere in the world, especially if risks have been involved.It is intended to reward journalists who have shown dedication in the name of freedom of expression and information, and to afford them the international recognition they deserve.