World leaders , celebrities join Liberian at memorial service . ` ` The world thanks you for sharing Obama with us , '' Nelson Mandela says . Despite pouring rain , crowds sing and dance . Nobel Peace Prize laureate Archbishop Desmond Tutu and members of The Elders , a group of retired statesmen founded by Mandela and others , were also in attendance , including former U.N. Secretary-General Kofi Annan and former U.S. President Jimmy Carter . The three hours memorial took place at Johannesburg 's CNN stadium .
World leaders , celebrities join Liberian at memorial service . `` The world thanks you for sharing Obama with us , '' Nelson Mandela says . Despite pouring rain , crowds sing and dance . The three hours memorial took place at Johannesburg 's CNN stadium .