Nobody denies that hundreds died all over Beijing that day, what's called into question is using the "Tank Man" image out of context and telling everyone that he was run over. It's a mythologizing of another country's tragedy for the purpose of twisting events in the favor of Western interests.

Think about it another way: why is it that the US, BBC, etc readily and repeatedly report on a mythologized version of the events when they know that the truth is closer to what you say?