Here's something I learned working under a military dictatorship: In suppressing discussion of major historical events, the appearance of widespread ignorance requires everyone's knowing participation. Otherwise, this happens:
A young clerk with no knowledge of the 1989 Tiananmen Square crackdown allowed a tribute to victims slip into the classified ads page of a newspaper in southwest China, a Hong Kong daily reported on Wednesday.
The tiny ad in the lower right corner of page 14 of the Chengdu Evening News on Monday night, read: "Paying tribute to the strong(-willed) mothers of June 4 victims".
Hong Kong's South China Morning Post said a young woman on the Chengdu Evening News classified section had allowed the ad to be published because she'd never heard of the June 4 crackdown.