Firstly: the title. This is not the official English name for the event, nor is the official Chinese name. It isn't even a common name for the event in Chinese, its just a bad translation of the English name.
Secondly: the page. The incorrect official name is partly due to the fact that this incident shouldn't even have a name - it's a non-event. There were student protests in Beijing throughout 1989 but singling out Tiananmen Square is something only done in western sources.
Thirdly: the deathcount. The source is PBS, not a very accurate source in my opinion. Since the page is titled "Tian'anmen Square" riots, why are there any deaths listed at all? There were no deaths in the square. This is a point to which even most western scholars have conceded. The deaths, if you can find an official source, were all throughout Beijing and therefore don't belong on this page.