MINSK, Belarus >> More than 100,000 protesters demanding the resignation of Belarus’ authoritarian president rallied today in a vast square in the capital and later marched through the city, keeping up the massive outburst of dissent that has shaken the country since a disputed presidential election two weeks ago.

Sunday’s demonstration overflowed Minsk’s sprawling 7-hectare (17-acre) Independence Square. There were no official figures on crowd size, but it appeared to be 150,000 people or more. The demonstrators then marched to another square about 2.5 kilometers (1 1/2 miles) away.

Protesters say the official Aug. 9 presidential election results that gave President Alexander Lukashenko a sixth term in a landslide are fraudulent. The size and duration of the protests have been unprecedented for Belarus, a former Soviet republic of 9.5 million people that Lukashenko has ruled with an iron fist for 26 years.

Video from Belarus today showed the beleaguered president carrying a rifle and wearing a bulletproof vest as he got off a helicopter that brought him to his working residence amid the 15th straight day of protests.

As Lukashenko landed at the Independence Palace in Minsk, protesters were gathered in a nearby square. The video was released on the Telegram messaging app on a channel that other media identified as being close to Lukashenko’s press service.

Police made no immediate efforts to break up today’s protest. Earlier this month, some 7,000 people were arrested at protests after the election, many of them beaten with clubs or wounded by rubber bullets, which only angered ordinary residents even more.

The 65-year-old leader appears to be flailing about for a strategy to counter the demonstrations. He has repeatedly blamed Western interference, claimed the protests were backed by the United States and accuses NATO of building up troop concentrations in Poland and Lithuania on Belarus’ western border, which the alliance denies. He also claimed that Russian President Vladimir Putin was willing to offer security assistance to his government to quell the protests if he asked for it.

Lukashenko has consistently repressed opposition during his time in office and weariness with his hardline rule, as well as dismay over the country’s deteriorating economy and Lukashenko’s cavalier dismissal of the coronavirus pandemic, appear to have galvanized opponents.

“Belarus has changed. Lukashenko has been able to unify everybody, from workers to intelligentsia, in the demand for change,” said protester Slava Chirkov, who attended Sunday’s demonstration with his wife and son.

They held a sign declaring “Lukashenko, your milk has gone sour,” referencing Lukashenko’s former job as the director of a Soviet-era collective farm.

A similarly enormous crowd turned out for a protest a week ago and daily demonstrations have taken place since the vote. Several of the country’s key factories have been hit with protest strikes by workers fed up with government polices. Those strikes not only threaten the already-ailing economy, but show that opposition to Lukashenko extends beyond educated white-collar circles and into his traditional blue-collar base.

“Are you going to work for a dictator? Strike — that’s our answer,” Sergei Dilevsky, leader of the strike committee at the Minsk Tractor Works, one of Belarus’ largest industrial enterprises, told protesters at Sunday’s second rally site.

Lukashenko’s main election challenger, Sviatlana Tsikhanouskaya, fled to Lithuania the day after the election. Several other possible challengers fled the country even before the election.

An opposition Coordination Council was created last week to develop a strategy for a transition of power, but authorities in Belarus have opened a criminal probe into its formation.