This illustrates the situation with tolerance in Russia. These people on the photographs have a great deal of support (I asked many people).
The main reason for this was the situation with the criminals who attacked and killed Sviridov -- there were 6 of them but 5 were released by the police almost immediately (most probably for a bribe). Anti-caucassian opinions have always been strong here and this was 'the last drop'. They blocked one of the major streets in Moscow the next day and they assembled at Manezh square on Saturday to demand justice (initially). Assorted nationalists and other radical movements couldn't miss this action, of course, and soon the crowd started shouting 'Russia is for the Russians. Moscow is a Russian city', etc. Several Caucassians were attacked that day in different districts of Moscow.
This action was followed by similar demonstrations in StP and some other Russian cities.

The situation is a bit tense, because the Caucassians promised to gather tomorrow (Dec, 15) to 'answer the insult'. It's only rumors like this http://www.newsland.ru/news/detail/id/600052/cat/94/
but the locals are preparing.