here is a link to some of the work of the photojournalist who took that shot:
http://www.schicklerart.com/exh/yevgeni_khaldei/khaldei_selected_photographs.htmlIt includes 5 versions of the referred to picture.
some history behind the photo:
"In April of 1945, the Russians reached Berlin. Khaldei planned to photograph the capture of the city as it unfolded. When he realized that there were no Soviet flags in the city, he hopped on a plane to Moscow and searched throughout the day for a flag. As he entered a shop, he noticed some red tablecloths used for formal events. He borrowed three of these tablecloths from a reluctant shop worker named Grisha Lubinskii. Khaldei brought them to his uncle, a tailor, who then stayed up all night to sew on the hammer and sickle and yellow star.
Rushing back to Berlin he raised the first make shift flag over the Great German Eagle at the Tempelhof Airport on April 28. On May 2, Khaldei reached the Brandenburg Gate and witnessed a group of Russian troops being told that Hitler was dead. Khaldei immediately climbed the staircase of the gate and placed the second tablecloth-flag at the top with the bronze horses. Khaldei was determined to place the final Red Army flag at the top of the Reichstag. When he reached the burnt out structure, fighting was still going on in the basement. Khaldei and three comrades ascended to the roof of the Reichstag, which was slippery with blood from the fierce fighting just hours before. Khaldei then snapped one the most dramatic images of the century as the Russian soldiers raised the Soviet flag over the Reichstag."