Mandela Poster Project exhibiting 95 posters of the former South African president . Project received more than 700 poster submissions from around the world . Mandela Day has been celebrated worldwide since 2009 . Comment:
Mandela Poster Project exhibiting 95 posters of the former South African president . Project received more than 700 poster submissions from around the world . Mandela Day has been celebrated worldwide since 2009 . The day encourages 67 minutes of good deeds from participants .