About 100 ex-prisoners of the camp took part in the commemorating ceremony, including a 90-year-old professor Ihor Malytskyi from Kharkiv, Ukraine.
The Auschwitz survivor from Ukraine showed up with a blue and yellow ribbon on his clothing, which provoked mixed reactions and numerous angry comments among Russians.
The image was also published on the website and Facebook page of the propaganda Kremlin TV channel Russia Today.
The following derogative comments followed immediately: "The guy doesn't know what he's wearing. If he knew, he would have kicked "liberators'" offsprings. It is weird to see a death camp prisoner wearing a symbol of the country which praises fascist punishers as national heroes. The Polish have forgotten Volyn'...," "Fascist bastards! We will find you and kill you anyway!," "Why would a death camp prisoner wear a khokhol (derogative for Ukrainians in Russia - ed.) ribbon? To say thank you to Nachtigall liberators?"
Though most commentators attempted to protect the old man calling him a Ukrainian patriot and wishing him many years of life.