PARIS: Thousands of anti-far right protesters marched across France on Saturday as opponents of presidential candidate Marine Le Pen seek to form a united front to prevent her from winning an election runoff against incumbent Emmanuel Macron on April 24.

Macron, a pro-European Union centrist, won the presidency in 2017 after easily beating Le Pen when voters rallied behind him in the runoff to keep her far-right party out of power.

This year, the first round of voting last Sunday set up the same battle, but Macron is facing a much tougher challenge.

In central Paris, thousands of people gathered chanting anti-far right slogans and warning of democratic upheaval if Le Pen were to win. One banner read: “Against the far-right. For justice and equality, not Le Pen at the Elysee,” referring to the French president’s official residence.

“If the far-right is in power we will see a major collapse of the democratic, anti-racism and progressive camps,” Dominique Sopo, president of SOS Racism, which along with dozens of rights groups, unions and associations called for the protests, told Reuters.