Ukrainians wave communist flags near a statue of Soviet leader Vladimir Lenin during an International Worker's Day parade in Donetsk, Ukraine, May 2014. Photo: Marko Djurica/Reuters/File photo.

Ukrainians wave communist flags near a statue of Soviet leader Vladimir Lenin during an International Worker's Day parade in Donetsk, Ukraine, May 2014. Photo: Marko Djurica/Reuters/File photo.