WATCH: Kremlin critic Lyubov Sobol arrested at protests in Moscow during a TV interview.

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On Saturday Russian police have arrested more than 1,500 people and used force to break up rallies around the country as tens of thousands of protesters demanded the release of Kremlin critic Alexey Navalny, whose wife was among those detained.

Navalny had called on his supporters to protest on Saturday after being arrested last weekend as he returned to Russia from Germany for the first time since being poisoned with a nerve agent he says was applied to his underpants by state security agents in August.