A gay pride parade which was due to be held in the Serbian capital, Belgrade, has been cancelled after the authorities said they could not guarantee protection for those taking part.
Earlier this week, president Boris Tadic said the government would not allow extremists to disrupt the parade.
However, anti-gay groups threatened violence if the march was allowed to go ahead.
The BBC reports homosexuality in Serbia is still far from accepted. Members of the gay community are regularly the target of discrimination.
Belgrade's first gay parade was the scene of widespread violence in 2001.