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. Large-scale student-led demonstrations calling for political reform, anti-corruption measures, and other changes occupied Tiananmen Square and other areas; the Chinese government declared martial law and used troops and tanks to clear the square, resulting in significant casualties (exact numbers remain disputed and are not officially fully disclosed 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.