Actually yes. When I was in middle school, we learned about that.
However, there is a big difference between removing protestors from an area and trying to kill all of them.
The intention behind the gov response to the Bonus Army protests and that of the Chinese to Tiananmen wasn't very different.
Both saw the protests as PR disasters, they let them stay for a while, until they decided it was enough, and ordered them out.
Protesters resisted, and death followed.