The posters and graffiti were condemned by Serbian President Boris Tadic and the Serbian Foreign Ministry and government. The Democratic Youth organised the removal of the graffiti in front of Belgrade's Jewish Cemetery.
"This is definitely an organised attack and a rise of fascism," Radio B92 director Vjeran Matic said, adding that charges would be pressed.
The posters calling for the boycott of B92 appeared in central Belgrade on Tuesday morning.
They called on the public to boycott B92 for its "anti-Serbian activity, pernicious influence on Serbian youth, support for the independence of Kosovo, support for the spread of drug abuse, homosexuality and other Western diseases, and support for a multiracial new world order". The B92 logo was imprinted within the Star of David.
Another message on the posters was "Serbia to the Serbs". The posters were designed by a hitherto unknown organisation called the National Machine.
Similar slogans were written on the entrance to the building housing the offices of the Helsinki Committee for Human Rights and the entrance to the Jewish Cemetery.
The president of the Alliance of Jewish Municipalities of Serbia and Montenegro, Aca Singer, said that
anti-Semitism in Serbia was on the rise and that he would request that this issue be regulated more strictly by the law. Singer also said that he was surprised by an almost complete lack of reaction by Serbian intellectuals and the Serb Orthodox Church.