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Student demonstrators calling for government reform and an end to corruption occupied Tiananmen Square in the heart of Beijing for five weeks in the spring of 1989.
Those demonstrations captured the world's attention, but unfortunately between the late evening of June 3 and the early morning hours of June 4, the plug was pulled on the foreign networks such as CNN broadcasting the event and soldiers backed by tanks opened fire on civilians in and around the square. Casualties were estimated between 200-1000 dead.
It also produced the iconic photo in this post of a lone citizen stopping an armored column. The fate of that brave citizen is unknown to this day.
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It's a reminder to those of us who live in democracies that as much as we gripe about the imperfect nature of the governments we live under, these freedoms are hard won and require eternal vigilance to keep.
It is also a reminder that there are people who put their lives on the line in other parts of the world to obtain the freedoms that too many of us take for granted.