заноза(досл. "колючка в (чьём-л.) боку": My professor was an environmental activist when he was younger. Apparently, he was quite a thorn in the oil companies' sides at the time. – ...был той ещё занозой для...thefreedictionary.comShabe)
неприглядная сторона(And some want to brush the seedy side of Vancouver under the rug. Others will try to clean it up and help the addicts find a new purpose with treatment rather than prolonging the glamourous life style of a street drug addict. (Twitter)
ART Vancouver)