Tens of thousands of Bosnia Muslims are expected at a remembrance ceremony where the remains of 613 people will be buried near Srebrenica to commemorate the 16th anniversary of the killings.
The massacre is the worst single atrocity on European soil since World War II and the only episode of the 1992-95 Bosnian war that international courts have called a genocide.
The remains of the 613 victims, who will be buried in Monday's service in Pokocari near Srebrenica, were recovered from mass graves during the past year and identified through DNA tests.
Forensic experts painstakingly assembled complete skeletons and checked each bone against the DNA from blood samples of survivors of the massacre.
The dead were among more than 8,000 Muslim men and boys from the eastern enclave who were systematically killed after Serbian forces besieged the town on 11 July 1995 in the climax to the 1992-95 Bosnian war that claimed a total of 100,000 lives.
'Celebrated as heroes'
A Muslim member of Bosnia's presidency said on Sunday that many Serbs are not facing the truth about the Srebrenica massacre.
Bakir Izetbegovic, whose father Alija Izetbegovic was Bosnia's wartime Muslim leader, said the wartime Bosnian Serb leaders Radovan Karadzic and Ratko Mladic were still "celebrated as heroes" by a large number of Serbs.
"Time is needed for these things to heal and to find their place," he said. "It takes too long for things to improve. We still face provocations from people who consider Ratko Mladic a hero."
Mladic is being tried at the International Criminal Tribunal for the former Yugoslovia (ICTY) on 11 war crime charges, including genocide, for allegedly masterminding atrocities during the Bosnian war.
Munira Subasic, who lost her husband, two brothers, and many men in her wider family in the 1995 massacre said that though the arrest of Mladic had brought some comfort, "there is no justice that can make any mother happy".
Al Jazeera's Andrew Simmons, reporting from the Memorial Centre in Pokocari, said Monday's commemorations were "an active way of perpetual grief, as the whole cemetery is emotionally charged because Ratko Mladic is now behind bars, now facing justice in a defiant fashion".
PHOTO CAPTION
Bosnian Muslims carry coffins prepared for a mass burial at the Memorial Center in Potocari, near Srebenica July 10, 2011.
Al-Jazeera