Thousands of Serbian students gathered in the capital, Belgrade, to protest a U.N. court's recent acquittal of a former Kosovo prime minister and two Croatian generals for war crimes.

More than 2,000 students gathered outside of parliament Tuesday carrying signs and waving flags while calling on lawmakers to adopt a resolution condemning The Hague's ruling.

Serbian Justice Minister Nikola Selakovic joined in the demonstration calling for the prosecution of war criminals from countries other than Serbia.

''We have to raise our voices everywhere and demand that those who are in charge must prosecute those who committed war crimes in their own states. If the special prosecutor for war crimes can do it in Serbia, the same must be done in the neighboring countries as well.”

Last week, the Hague-based International Tribunal for the former Yugoslavia cleared former Kosovo prime minister Ramush Haradinaj, a war-time rebel leader, and two of his commanders of war crimes charges against Serb civilians, and ordered their immediate release.

Weeks earlier, the court cleared two Croatian generals on charges of committing war crimes during a key battle for Croatia's independence.

The verdicts have enraged Serbia, which has accused the tribunal of bias against Serbs.