More than 15,000 people joined a march honoring Serbia's slain Prime Minister Zoran Djindjic, the reformist leader who led efforts to bring Belgrade closer to the West after the wars of the 1990s.
Djindjic was killed by a sniper on March 12, 2003 in front of the government headquarters in central Belgrade. He was 50 years old.
More than a dozen nationalist paramilitary members and gang members have been convicted and sentenced for the killing.
Djindjic played a key role in the ouster in 2000 of President Slobodan Milosevic and his extradition to the UN war crimes tribunal in The Hague.
While serving as prime minister in 2001-03, Djindjic launched reforms and set Serbia on the path toward European integration.
Analysts say Djindjic's killing was a major setback for Belgrade's progress.
PHOTO GALLERY: Remembering Zoran Djindjic:
Based on reporting by Reuters and AP