Warsaw: Tens of thousands of nationalists marched in Warsaw on Saturday to commemorate Polish Independence Day.
The demonstration was carried out under the slogan "Poland is not yet lost," a reference to the country's national anthem. It began in the city center on Saturday afternoon and was scheduled to end at the National Stadium.
Many participants held up white and red flags, while others carried hand flares.
Warsaw's municipal administration estimated the number of participants to be at least 40,000.
Organizers called the event the "largest patriotic rally in Europe."
Warsaw mayor Rafal Traszkowski said that the event occurred "peacefully."
The event comes after Poland's nationalist Law and Justice party (PiS) lost its absolute majority in parliament in an election last month, leading to its likely replacement by an opposition alliance.
While the current ruling party won the most seats in the election on October 13, it lacks willing and viable coalition partners.
Opposition leader and Donald Tusk, who might well ultimately become the next prime minister, called for moderation in an Independence Day video message on social media.
"Anyone who uses the word nation to divide and sow hatred is standing against the nation," he said.