This is what happens, yeah

Pretty much. I was taught in high school that the tank literally ran him over, thousands of peaceful protestors were murdered in the square for simply wanting democracy, and that Communist China was evil and totalitarian because "they murder their own kids".

I have memories of seeing a picture where there was a dark colored stain about where the guy would have been standing if a tank rolled over him.

I'm, like, 99% sure this is not a real memory and some Mandela effect thing going on.