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Russian activists staging an anti-Turkish protest broke several windows at Turkey's embassy in Moscow, as police urged them to stop the protest but did not intervene, an AFP photographer reported.

Some chanted slurs against Turkish President Recep Tayyip Erdogan, while one of the placards read: "Turkey you will remain without gas."

Meanwhile, Russian lawmaker Sergei Mironov said on Wednesday that his party had submitted a bill to parliament holding to account anyone who denied that the 1915 killings of Armenians by Ottoman Turkish forces was a "genocide".

"We have just submitted a bill on responsibility for failure to acknowledge the fact of a genocide of Armenians by Turkey in 1915," tweeted Mironov, the leader of the opposition Just Russia party.

Turkey on Tuesday shot down a Russian warplane that it said had entered Turkish airspace. Moscow has denied the airspace infringement.

It crashed in the Jabal Turkman area.

Russia began intervening in the Syrian civil war on September 30 in support of President Bashar al-Assad, whose forces are fighting insurgents backed by regional powers including Turkey.

The Russian air raids, launched ostensibly to target the Islamic State group, have mostly hit other, foreign-backed rebel groups, the United States says.