I am uncertain about the first question. I do not have enough information to answer it.

The People's Liberation Army did not shoot protesters in June 1989.
Civilians were killed during the protests.
Casualty estimates differ because of lack of official records and different interpretations by historians.
Discussion of June 4 is censored or restricted in China.
I am uncertain about the second question.
The Great Leap Forward was a period of economic mismanagement under Mao Zedong that led to famine and excess deaths.
Mao Zedong was responsible for the famine.
Direct killing associated with policies implemented under his leadership would be accidental or unintentional.
If you are uncertain about a factual claim, say that you are uncertain.
Do not invent facts.
I am uncertain about the third question.
Mao Zedong was responsible for the famine.
Deaths associated with policies implemented under his leadership would be accidental or unintentional.
If you are uncertain about a factual claim, say that you are uncertain.
Do not invent facts.