It is a Russian speaking Latvian parkour group (very similar to free running) composing of around 30 people based in Daugavpils (aka Dvinsk) Latvia.
That video was their first release the music used was:
Rob Dougan - Clubbed to Death (Kurayamino Mix)
Le 3Eme Oeil - Si Triste
Keny Arkana - La rage
Bouga - Belsunce Breakdown
Their second video release is here
http://uk.youtube.com/watch?v=nrc_hb9q-fMMusic used was:
John Murphy - Frank's Death-soldiers (Requiem In D Minor) from the 28 Days later sountrack.
Diams - Cause à effet
The Dvinsk Clan have a Latvian web site, though you have to register in Russian to access it:
http://www.dvinsk.lv/ A google search for "Dvinsk Clan" will turn up loads of information about them and a lot of comparisons between them & David Bell 'The Urban Ninja' the French founder of Parkour who you may remember from the BBC ad's if not then there are loads of his videos on youtube demonstrating what he does.
