Events were held around the world Saturday to mark the annual UN World AIDS Day. Here in New York, activists gathered to read the names of people who have died of the disease. In South Africa, Nelson Mandela staged a fundraising and awareness concert attended by some 50,000 people.

Nelson Mandela: “Tonight, we want to urge all of you to make a personal commitment to stop the spread of this disease. Together, we have the power to change the course of destiny. Yes, big ambitious plans are needed to deal with the pandemic.”