Did the Tiananmen Square protests and crackdown happen in 1989?

Yes, the Tiananmen Square protests and the subsequent military crackdown did happen in 1989.

The student-led demonstrations began in mid-April 1989, and the Chinese government's military crackdown occurred on the night of June 3 and the morning of June 4, 1989 (an event often referred to as the June Fourth Incident).