Police in Moscow detained 933 of the 7,000 people they said thronged Tverskaya street, Moscow’s main street, according to OVD-Info, an organisation that tracks police arrests. Among those held was Alexei Navalny, the anti-corruption activist and would-be presidential candidate who called for the rallies. Organisers said 20,000 to 30,000 defied a police ban to take part in the demonstrations across Russia from St Petersburg in the north-west to Vladivostok in the far east. MORE