I don't think anyone is claiming that the specific famous tank man of Tiananmen got run over by the tank. However, there is plenty of evidence that people got "mowed down by tanks" at Tiananmen Square: https://www.theglobeandmail.com/world/article-why-is-the-arm...
https://www.reddit.com/r/TankPorn/comments/1k2ungn/pla_armor...
too bad that China didn't embrace its Beijing Spring back in 1989.