Moscow football fans briefly blocked a key city artery in protest at a killing which puts new pressure on race relations in the Russian capital.
They stopped traffic on Leningrad Avenue for half an hour, climbing on cars, lighting flares and chanting nationalistic slogans.
Protesters demanded a full inquiry into the murder of Yegor Sviridov, 28.
He was allegedly shot in a fight with a group of men from the North Caucasus, a mountainous region in southern Russia.
Longstanding ill-feeling between ethnic Russians and members of the North Caucasus's numerous small ethnic groups is one of the country's most sensitive social problems.
While ethnic minorities complain of continuing discrimination in central Russia, some ethnic Russians accuse the authorities of trying to play down hate crimes against Russians.
The death of Mr Sviridov generated a w
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