Did the Tiananmen Square protests and crackdown happen in 1989?

Yes.

The Tiananmen Square protests were student-led (and later broader) demonstrations in Beijing, China, that began in April 1989 following the death of reformist Communist Party leader Hu Yaobang. Protesters gathered in and around Tiananmen Square calling for political reforms, democracy, free speech, an end to corruption, and other changes. The movement grew to involve hundreds of thousands (at peaks, over a million people in the area).[1]

The Chinese government declared martial law in May 1989 and, on the night of June 3–4, 1989, sent in troops and tanks to clear the square and surrounding areas by force. This resulted in a deadly crackdown (commonly known as the Tiananmen Square Massacre or June Fourth Incident), with hundreds to thousands of deaths (estimates vary widely; the Chinese government has given lower official figures, while other sources cite higher numbers) and many more injuries and arrests.[2]

This is a well-documented historical event confirmed by contemporaneous reporting, historical accounts from sources like History.com, Britannica, BBC, Amnesty International, CNN, and others. The Chinese government continues to heavily censor discussion of it domestically.