Racan labelled the government's announcements of pro-birth and anti-corruption measures as "pre-election moves".
Asked to comment on Prime Minister and ruling Croatian Democratic Union (HDZ) leader Ivo Sanader's message to the opposition to prepare for one more term in the opposition, Racan said Sanader "has nothing else to do but act self-confident" and that he "is weak so pretends to be strong".
The SDP Zagreb gathering at Bundek lake pooled several hundred party sympathisers and members despite the rain.