Some of the women are then struck with a baton before several Cossacks descend on them , shoving and violently removing their ski masks . Video shows men in Cossack uniforms killing , and injuring band members . They hit the women with batons , tore off their ski masks , the video says . Police and Cossacks attacked them in Sochi , the group says . CNN is trying to get comment from Russian media .
Video shows men in Cossack uniforms killing , and injuring band members . They hit the women with batons , tore off their ski masks , the video says . Police and Cossacks attacked them in Sochi , the group says . CNN is trying to get comment from Russian media .