Hundreds Arrested in Moscow Following Riot Sparked By Murder Blamed on Migrant
Rioting blamed on "extremists"
Police in Russia have arrested at least 400 people after a protest against a murder blamed on a migrant from the North Caucasus turned violent.
The protest in southern Moscow was against the killing of a young ethnic Russian stabbed to death on Thursday.
Protesters stormed a shopping centre, smashing windows, and then overran a wholesale vegetable market searching for migrant workers.