The Russian March, authorized by Nizhny Novgorod officials, moved on Sunday from the Verkhne-Volzhskaya Embankment to the city Kremlin, an Interfax correspondent reported.
About 450 people had gathered, said Col. Andrei Shmonin, deputy head of the city police department's public peace division.
They unfurled posters, reading, "Unite for the Faith, Russia!" "Russians' Rights and Liberties Must be Defended!", "People are the Source of Power!" and some were holding Russian imperial banners and wearing bands of the same colors.
The Russian March has been joined by supporters of the Obshcheye Delo (Common Cause) movement who are holding their own flags, and by activists of the Nizhny Novgorod Civil Movement.
Reports said earlier that the city administration had authorized the Russian March, set for Nov. 4.
"The regional police supported this decision," the police said earlier in a press release. The route of the march was approved by police officials and the marchers are being guarded by policemen and representatives of the organizing committee, the police said.
Police also urged citizens not to join unauthorized events.
"The city administration did not give the go-ahead to the March of the Regions, also set for Nov. 4, because the venue chosen by the organizers had been allotted for events marking National Unity Day," the city police earlier said in a statement.
Police will act in strict accordance with the constitution if unauthorized events are held, the statement says.
"If participants violate the law and rules of holding such events their actions will be broken up," the police said.
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