Mitt Romney: It's unacceptable Microsoft censored Tiananmen Square images in America

Senator Mitt Romney wants answers from Microsoft after the company blocked images and videos around the world of "Tank Man," the unidentified protester during China's brutal crackdown on pro-democracy demonstrations in Beijing's Tiananmen Square on June 4, 1989.

In a letter to Microsoft CEO Satya Nadella provided exclusively to CNN, Romney said he was concerned about how the company's censorship in China could spill over into America.

"While the People's Republic of China infamously censors internet search terms related to the Tiananmen Square Massacre (including "Tank Man"), the possibility that the Chinese Communist Party's censorship would be extended to the United States by an American company is unacceptable," Romney wrote.