Although the identity of the rally's organisers and those who expelled the Croats are known, nobody has been brought to justice for those crimes, the DSHV said in the statement.
The Hrtkovci rally of 6 May 1992 ushered in a large-scale persecution campaign against Vojvodina Croats.
During the 1990s, some 30,000 Croats were forced to leave the area.
The Serb Radical Party leader, Vojislav Seselj, who attended the Hrtkovci rally, is standing trial before the Hague-based UN tribunal for war crimes. He is charged, among other things, with the ethnic cleansing of non-Serbs in Vojvodina.
The League of Vojvodina Social Democrats (LSV) on Thursday joined in calls for bringing to justice those responsible for the persecution of Hrtkovci Croats. The LSV party, led by Nenad Canak, issued a statement in which it portrayed Hrtkovci as a by-word for ethnic cleansing.