Apparantly they have a squadron of Cossacks in Sochi as a kind of riot-control.
Follow up.
A video of what happend: http://nyhederne.tv2.dk/udland/2014-02-19-pussy-riot-aktion-stoppet-med-pisk-og-peberspray-0
It took one Cossack - and a whip - to end the show.
(14 sec advert first).
I happen to love music so I can’t say I appreciate Pussy Riot’s performance...