A variety of concerns over the Games, or China's hosting of the Games, had been expressed by various entities, including claims that China violated its pledge to allow open media access,[123] various claims of human rights violations,[124][125] its alleged continuous support of repressive regimes (such as Zimbabwe, Myanmar, Sudan, and North Korea), air pollution in both the city of Beijing and environs,[126] proposed boycotts,[127][128] warnings of the possibility that the Beijing Olympics could be targeted by terrorist groups,[129] disruption from Tibetan separatist protesters,[130] and religious persecutions.

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