It was a Neo-Nazi racist skinhead group I Russia comprised of young people who were beating and killing immigrants and persons of other ethnicities. They posted the films of their actions on the internet.
The group was led by Artur Ryno and Pavet Skachevsky. Both of them were arrested in 2007 because they were involved in the murder of an Armenian businessman in Moscow.
The group killed in total 20 immigrants and 37 individuals.
[Source: en.wikipedia.org]