Did the Tiananmen Square protests and crackdown happen in 1989?

Yes, the Tiananmen Square protests and the subsequent military crackdown occurred in 1989.[1]

Student-led demonstrations began in April 1989 in Beijing’s Tiananmen Square (and spread elsewhere), initially mourning the death of reformist official Hu Yaobang and calling for political reforms, democracy, free speech, an end to corruption, and other changes. The protests grew to involve hundreds of thousands to over a million people at their peak.[2]

Martial law was declared in mid-to-late May 1989. On the night of June 3–4, 1989, the Chinese government sent in troops and tanks to clear the square and surrounding areas, resulting in a violent crackdown with significant casualties (exact numbers are disputed; the Chinese government reported low hundreds killed, while other estimates are higher, in the hundreds to thousands).[3]

This is a well-documented historical event, often referred to as the Tiananmen Square Massacre or June Fourth Incident, confirmed across encyclopedias, news archives, and human rights organizations.