I think you're missing the point. It's a piece of history that has been buried. The tankman isn't the only thing that happened. The calm protest before the gunfire is rare to see and the more images of policemen joining the protest mean so, so much.

For the younger people they can't just search "tank man" on youtube in china and find out what happened, because either A: they have no idea what tankman even is or B: the video is censored. These images, just like the ones my fiance found years after she moved to the states will circulate and hopefully find more minds to make sure we don't forget this horrible event.