Did the Tiananmen Square protests and crackdown happen in 1989?

Yes.

The Tiananmen Square protests (also known as the June Fourth Incident) occurred in Beijing, China, in the spring of 1989, culminating in a military crackdown on or around June 3–4, 1989. Large-scale demonstrations led primarily by students called for political reform, anti-corruption measures, and greater freedoms; the Chinese government declared martial law and used the People's Liberation Army to clear the square and surrounding areas, resulting in significant casualties (exact numbers remain disputed and are not officially acknowledged in full by the Chinese government).

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