 On March 6 , 2014 , during a visit to Nizhny Novgorod as part of a campaign for prisoners ' rights , a group of unknown men wearing Ribbon of Saint George medals doused group members Nadezhda Tolokonnikova , Maria Alyokhina , and Taisia Krugovykh with green @-@ coloured chemicals or paint , allegedly damaging their eyes . Alyokhina also suffered a concussion after being hit with a jar containing the paint or chemical . 
