Remembering Tiananmen Square (SLIDESHOW)

Twenty years ago, a lone young man blocked the path of Chinese military tanks attempting to interrupt protests in China's Tiananmen Square. Today, China has largely erased the scene from its national memory, but around the world, people remember the courage of the anonymous protester, often called the Tank Man.

For a time line of the events leading up to the killings that shocked the world, check out this slideshow: