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Skaters from the Stockholm Roller Derby cheer on their team during a women's flat track roller derby bout against the Kallio Rolling Rainbow in Huddinge June 11, 2011. Flat track roller derby
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File:Happy Boutday – Stockholm Roller Derby vs Helsinki Roller Derby (7197567068).jpg - Wikimedia Commons
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A skater from the Stockholm Roller Derby (L) battles a player from the Kallio Rolling Rainbow during their women's flat track roller derby bout in Huddinge June 11, 2011. Flat track roller
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