The annual event, held to commemorate Poland's national independence day, breaks down into violence.
Riot police have fired rubber bullets at groups of masked nationalist youths after a nationalist march turned violent in the Polish capital. The annual event is held to commemorate Poland's national independence day, and for the third year in a row it broke down into running battles in the middle of Warsaw between rioters and police.
Several thousand nationalist protesters began their march peacefully - watched by their own stewards in orange vests and with a police helicopter circling above. The violence started when a few dozen youths, their faces covered by balaclavas and football scarves, broke off from the procession into a side street and started attacking a building where left-wing radicals occupied a squat. Riot police moved in, and came under attack from youths throwing firecrackers and stones. The violence underscores the problems in Polish society with many having grown wealthier in the past few years. However, a minority feel alienated and believe traditional values on marriage, abortion and the church have been swept aside.
One of the buildings caught up in the violence was the Russian embassy, which led to complaints from the country's foreign ministry. Moscow summoned the Polish ambassador on Tuesday asking for an official apology as well as measures to provide for "the security and normal operation of Russian diplomatic representations in Poland."
Polish non-governmental watchdogs say incidents of racially-motivated violence are increasing, while youths shouting far-right slogans have gatecrashed university lecture halls where liberal academics have been speaking.
Before the violence broke out at Monday's march, demonstrators chanted: "God, honour, fatherland!"
One said: "I believe that Polishness is under threat."
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