Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Observers Urge Social Media Platforms to Keep Scrutinizing China-Backed Accounts Joyce Huang Three U.S. social media giants -- Facebook, Twitter and Google's YouTube -- have taken action to remove hundreds of accounts with alleged ties to the Chinese government's manipulation of opinion about the months-long anti-government movement in Hong Kong. But analysts said more needs to be done, as China's global media drive to control information beyond its borders has become so "irrevocable" that it poses a threat to democratic development and press freedom throughout the world. YouTube said last week that it has suspended 210 channels, which "behaved in a coordinated manner while uploading videos related to the ongoing protests in Hong Kong." Those channels were suspected to be part of a Beijing-backed campaign to influence opinion about the city's political unrest. The move followed similar measures announced by Twitter and Facebook earlier last week to stop the distribution of disinformation content, for example, likening the anti-government protests in Hong Kong to the terrorist group Islamic State. .