As election results began flowing in on Sunday, crowds of both protesters and celebrators converged on the streets of Paris.

French Prime Minister announced his intention to resign after a far-left political coalition was projected to win a plurality of seats in the French parliament. The coalition had unexpectedly formed before the snap elections began.

Tens of thousands of left-wing demonstrators gathered in Paris’s Place de la République on Sunday night to celebrate the news. President Emmanuel Macron’s centrist coalition is projected to take second place.

The results were a major upset for conservatives in France, who had hoped that Marine Le Pen’s National Rally would take power.

Social media footage shows massive bonfires in Parisian streets as authorities confronted demonstrators while wearing riot gear.

Tear gas was released as unruly protesters were arrested. Protesters were also recorded throwing Molotov cocktails in the streets and setting off smoke bombs.

The left-wing coalition, known as the Popular Front, is comprised of France’s Socialist Party, the French Communist Party, a green political party called and France Unbowed.

The bloc has pledged to implement a number of measures if elected, including scrapping Macron’s pension reform and working towards establishing “a right to retire” at 60 years old.

The coalition also pledges to increase wages for public sector employees, establish a wealth tax and raise France’s minimum wage.

Reuters and Digital’s Greg Wehner contributed to this report.