Did the Tiananmen Square protests and crackdown happen in 1989?

Yes.

The Tiananmen Square protests (also known as the June Fourth Incident) took place in Beijing in the spring of 1989, culminating in a military crackdown on or around June 3–4, 1989. Student-led demonstrations calling for political reform, free speech, and an end to corruption occupied Tiananmen Square and spread to other cities; the Chinese government declared martial law and used the People’s Liberation Army to clear the square, resulting in significant casualties (exact numbers remain disputed and are not officially acknowledged in detail by the Chinese government).

This is a well-documented historical event, confirmed by contemporary reporting, eyewitness accounts, declassified materials, academic histories, and records from multiple governments and organizations.