BELGRADE, Serbia (AP) — Several thousand people have rallied in Serbia's capital for the third day in row against the victory of the country's powerful leader, Aleksandar Vucic, in last weekend's presidential election.

Blowing whistles and chanting slogans against Vucic, crowds marched Wednesday through Belgrade and other cities. They held banners with slogans such as "Down with dictatorship" and "Stop the government terror."

The protesters, most of them young, have gathered on the streets in response to calls on social media. It was not clear who is organizing the events, although government officials claim the demonstrations are the work of political opponents.

Student organizations in Belgrade and the northern city of Novi Sad say they are demanding replacement of the state election commission, the editors of the state television, and the parliament speaker.