Local tourists visit Tiananmen Square in Beijing June 4, 2007. Tiananmen Square was quiet on Monday and China's media was silent on the bloody crackdown on pro-democracy demonstrators that took place there 18 years ago to the day, but rights groups said it would not be forgotten. Tiananmen Square itself was full of the usual tour groups, both Chinese and foreign, and locals flying kites, as well as plainclothes security and police vans. People's Liberation Army troops and tanks crushed the student-led demonstrations in the historic Beijing square on June 4, 1989, killing hundreds, possibly thousands.