Bialystok, Poland (CNN)A Polish city celebrated its first-ever LGBTQ equality march on Saturday, but it struck a starkly different tone to the joyous and hedonistic affairs associated with pride parades.
Polish city holds first LGBTQ pride parade despite far-right violence
Ringed by riot police, around 1,000 pride marchers walked defiantly through the streets of the northeastern city of Bialystok as thousands of nationalist football "ultra" fans, far-right groups and others threw flash bombs, rocks and glass bottles.
As counter-protesters yelled "God, honor and motherland" and "Bialystok free of perverts," the pride marchers chanted "Poland free of fascists" in return. Police said about 4,000 people were involved in demonstrations against the march.
Bags of flour and other objects were thrown out of Communist-era housing blocks at the pride marchers, who were moving along a 3-kilometer (1.8 mile) route through the city center.
According to Bialystok's police spokesman, Tomasz Krupa, the violence led to the detention of 20 people, four of whom were suspected of committing crimes, including the use of threats and insults against officers.
The city of 298,000 people is located in the conservative region of Podlasie, a stronghold for Poland's ruling right-wing Law and Justice party, known by its acronym PiS.
According to anti-racism groups, Bialystok has become a byword for its strong far-right movements. "Many of the acts of xenophobic aggression have been committed in Podlasie compared to other regions in Poland," Rafal Pankowski, from the anti-extremism group Never Again, told CNN.
But the hostile atmosphere did not dampen the mood of a multi-generational group of marchers, who described the event as a victory in their fight for more equality -- despite the threats.