The call to protest came from the opposition politician and anti-corruption campaigner Alexei Navalny, who was himself detained at the Moscow demonstration. A monitoring group said at least 850 people were detained in Moscow alone, while the news agency Tass gave a figure of 500. Alexei Navalny: Russian opposition is not deterred by Boris Nemtsov murder Read morePolice said about 7,000 people attended the Moscow rally on Sunday, though the real number may have been much higher. Shaun Walker (@shaunwalker7) More video from the clashes around the bus with arrested protest leader @navalny inside from an hour or so ago. The Guardian reporter Alec Luhn was among those detained, grabbed by riot police while photographing police detaining others.

Source: The Guardian March 26, 2017 12:36 UTC