Warsaw police said participants in a nationalist `` Independence March '' set alight a guard station at the embassy and tried to storm its gates . Warsaw expresses regret after rioters attack Russian Embassy in Poland . Police say participants in November 11 , 1918 set a guard booth on fire . Russian media say protesters threw fireworks at Polish Embassy in apparent retaliation . Poland declared independence on an Independence Day march , at the end World War II .
Warsaw expresses regret after rioters attack Russian Embassy in Poland . Police say participants in November 11 , 1918 set a guard booth on fire . Russian media say protesters threw fireworks at Polish Embassy in apparent retaliation . Poland declared independence on an Independence Day march , at the end World War II .