>>>Do you think the Tiananmen Square Massacre happened?
Yes
>>> And if you think it did, did China HAVE to do it as it had no other course it could follow?
To answer indirectly if the US was facing such an insurrection they would have responded the same way. Especially if the demonstrators were white.
>>>What about the Kent State Shootings?
Given the information known to the National Guard at the time (they were falsely told the demonstrators were armed) and given the violence done by the demonstrators over the previous days I do not blame the national guard for shooting at them