Fans of Ukrainian Football Club Metalist and Football Club Dnipro, in normal times implacable enemies, gather during a march to support a united Ukraine on April 27, 2014 in Kharkiv, northern Ukraine. Several men were injured as a result of clashing with pro-Russia supporters who attacked the march. AFP PHOTO / SERGEY BOBOK        (Photo credit should read SERGEY BOBOK/AFP/Getty Images)