Athletes traveling to next month's Beijing Olympics were warned on Tuesday about speaking up on human rights issues while in China for their own safety by speakers at a seminar hosted by Human Rights Watch.

Rights groups have long criticized the International Olympic Committee (IOC) for awarding the Games to China, citing the treatment by the Chinese government of the Uyghurs and other Muslim minority groups, which the United States has deemed genocide. China denies the allegations of human rights abuses.

"There's really not much protection that we believe is going to be afforded to athletes," Rob Koehler, the director general of the Global Athlete group, said in the seminar. "Silence is complicity and that's why we have concerns.