Tiananmen Square Massacre forgotten in China?

Think about the power that information holds, the power that comes from controlling the flow of information, and the power humans have to willfully forget completely.
A young clerk in China approved a classified ad dedicated to the mothers of those who died in the Tiananmen Square Massacre, against government policy, because he had never heard of the massacre. The person placing the ad said 'June 4th' was the date of a mining disaster and the clerk had no reason to believe otherwise.
18 years is not a long time.