Azerbaijanis and Armenians fight in Moscow's streets. Why? - video and photo
25 people were detained in Moscow on July 24 after several pedestrians and drivers were attacked.
Similar incidents have been reported recently in the United States and other countries.
Fights broke out and one officer was injured on July 21 during a large demonstration staged by an Armenian group near the Azerbaijan Consulate General in Brentwood, Los Angeles.
Member of the Union of Armenians of Russia David Tonoyan said on his Facebook page that the Azerbaijanis had stabbed his friend with a knife.
A video of a group of men attacking a car allegedly belonging to immigrants from Armenia has become widespread on social media.
The Moscow police insists on the number of 13, and does not comment on the connection of these incidents with the aggravation of relations between Azerbaijan and Armenia.