Anger is mounting in Bosnia over the arrest of a former Bosnian general.
Around 5,000 marched in Sarajevo after Jovan Divjak was detained in Vienna on a Serbian warrant.
Belgrade accuses him of war crimes during the Balkan conflict.
Joining the march was Ejup Ganic who was also arrested in London last year but released due to a lack of evidence.
“They are trying to rewrite history by saying freedom fighters are war criminals, not Milosevic, not Mladic. This is very ridiculous,” he said.
Divjak was a Serbian officer but changed sides during the conflict.
Serb prosecutors say he was part of a Bosnian army attack on a former Yugoslav army convoy that had been offered safe passage out of Sarajevo in May 1992. They say 42 Yugoslav soldiers were killed.