Thousands of Serbs gathered Tuesday in front of Parliament in Belgrade to protest the Hague International Criminal Tribunal's rejection of Milan and Sredoje Lukic's appeals.

Tuesday the International Criminal Tribunal for the former Yugoslavia confirmed that the two cousins, leaders of paramilitary Bosnian Serb units during the Bosnia war in the early 1990s, are guilty of war crimes.

Milan Lukic had a life sentence confirmed, while Sredoje Lukic's sentence was reduced from 30 to 27 years in prison.

The two have been found guilty of killing more than 50 women, children and elderly people in the summer of 1992 in the Bosnian town of Visegrad.

Tuesday protesters in Belgrade expressed their anger at what they see the Hague Tribunal's bias against Serbs in its proceedings.

They pointed out to the recent acquittal of Croatian generals Ante Gotovina and Mladen Markac, as well as former Kosovo Liberation Army field commander Ramush Haradinaj.

The acquittals provoked public festivities in Croatia and Kosovo, respectively, where the defendants are seen as national heroes.