Going back 35 years to point out a time when protestors were killed is always a strange thing to me. You can go back just a few weeks until you reach a point where the US killed protestors. Then there's stuff like the Black Lives Matter protests where the US government violently suppressed protests and people died/disappeared.
If 1989 is all a country has as a problem, then that's a sign it's doing great.
There are plenty of other more recent examples in this thread.
I was simply replying to the original statement that China doesn't kill protesters in the street. The notion is so risible that in hindsight it may well have been sarcasm or bait.
But, if you wish to expand the scope of this discussion, sure. There are several clear distinctions between the (horrible) events you list and what happened in Tiananmen Square.
The most obvious is that we are free to talk about them now. I submit that the Chinese state's continued censorship of the subject is a sign that (1) the state is still complicit in these crimes and (2) it is not "doing great".
The scale of brutality is also just incomparable. I say this fully agreeing the events you list were terrible. The horrors committed at Tiananmen Square were simply on another level.
If 1989 is all a country has as a problem, then that's a sign it's doing great.