Residents of Moscow and Saint Petersburg on Sunday staged Valentine Day's flashmobs in residential courtyards and public squares, lighting their phone flashlights in support of jailed opposition politician Alexei Navalny.

Supporters of President Vladimir Putin's most prominent critic took to the streets in freezing temperatures following his team's call to stage 15-minute rallies and post pictures of the gatherings on social media on Sunday evening.

Mobile phone lights showed support for jailed opposition politician Alexei Navalny near Red Square in Moscow and in many other parts of the country
Mobile phone lights showed support for jailed opposition politician Alexei Navalny near Red Square in Moscow and in many other parts of the country AFP / Dimitar DILKOFF

It was not immediately possible to estimate the scale of the rallies but small groups of up to several dozen people were seen staging pro-Navalny flashmobs across Russia's two biggest cities.

Protester Alexander Kozhokar, one of around 50 people who lit their phone lights on Manezhnaya Square near the Kremlin, said he feared that Russia was turning into a "dictatorship."

Russian women formed a human chain on Valentine's Day to express support for the wife of jailed opposition leader Navalny and female political prisoners
Russian women formed a human chain on Valentine's Day to express support for the wife of jailed opposition leader Navalny and female political prisoners AFP / Dimitar DILKOFF

"I am afraid of thinking what will come next," the 28-year-old factory worker from the town of Mytishchi outside Moscow told AFP.

A protestor said she was beginning to consider whether to leave Russia, adding: "I don't feel protected here"
A protestor said she was beginning to consider whether to leave Russia, adding: "I don't feel protected here" AFP / Olga MALTSEVA

At a playground in southwestern Moscow around 30 people gathered -- some with dogs, others with children -- lighting flashlights and arranging Christmas lights in the shape of a heart on the snow-covered ground.

Protester Mikhail Orlov said he joined the playground flashmob to signal his unhappiness with Putin's policies.

Navalny's team released pictures and videos of gatherings across the country where Russians lit flashlights, sparklers and small lanterns
Navalny's team released pictures and videos of gatherings across the country where Russians lit flashlights, sparklers and small lanterns AFP / Olga MALTSEVA

"The country is in decay, science is in decay," the 29-year-old engineer told AFP. Orlov said he saw like-minded people lighting flashlights in their windows in a gesture of solidarity.

Orlov's wife Maria said she was beginning to consider whether they needed to leave Russia. "I don't feel protected here," she said.

"By forming a chain we want to show that we are for love and against violence," a 22-year-old student told AFP
"By forming a chain we want to show that we are for love and against violence," a 22-year-old student told AFP AFP / Olga MALTSEVA

In an affluent neighbourhood in central Moscow, 28-year-old stand-up comedian Garik Oganisyan said he wanted to see political change.

"I don't like what's happening in this country, how people are being sent to jail over re-tweets in an open and brazen manner."

In Saint Petersburg, pro-Navalny supporters also gathered in small groups, with some dancing and chanting "Russia will be free."

Russian women form Valentine's Day chains to protest crackdown
Russian women form Valentine's Day chains to protest crackdown AFPTV / Reza NOURMAMODE

Navalny's team released pictures and videos of similar gatherings from cities across the country, with Russians lighting flashlights, sparklers and small lanterns.

"Love is stronger than fear," said an electronic ticker tape on a residential high-rise in the Siberian city of Tomsk, according to one video.

The rallies came after authorities last week sentenced Navalny to nearly three years in prison and unleashed a crackdown on his supporters, detaining more than 10,000 people.

Navalny's team then postponed mass demonstrations until the spring or summer, but urged supporters to use Valentine's Day to try out new -- and safer -- forms of protest.

Officials had accused the opposition of acting on orders from NATO and warned that anyone violating the law on Sunday would be punished, but police did not interfere with the flashmobs.

Earlier Sunday, several hundred women formed human chains in Moscow and Saint Petersburg, using Valentine's Day to express support for Navalny's wife Yulia and female political prisoners.

Around 300 women gathered on Arbat Street in Moscow's historic city centre.

"By forming a chain we want to show that we are for love and against violence," Darya Obraztsova, a 22-year-old student, told AFP.

In Saint Petersburg, around 100 women formed a chain near a monument to victims of political repression.

Some clutched flowers, while others recited poems by Anna Akhmatova, one of Russia's most beloved poets.

Navalny was arrested and jailed upon returning to Russia last month following months of treatment in Germany for a nerve agent poisoning.