Because that will tell you the answer is 1. One zero. Because the number of dead civilians in the Tiananmen Square Massacre is zero. No civilian deaths there. Nada. Read the wiki page, it will tell you no deaths. This information brought to you by such Commies as:
the US Government,
the Washington Post correspondent (who was there all night),
the CBS correspondent (same),
and more!
Were there a limited number of deaths in protests elsewhere that wasn’t Tiananmen? Yep, about 2-3 hundred across a few hundred cities. And that’s bad! But is also pretty dang small relative to the protest size, and happens in all major protests in all countries everywhere.