The following post dealing with Hong Kong’s “umbrella revolution” by user “Angry Lim” (憤怒的-Lim) was deleted sometime before 4:23PM today, October 28, 2014. [See more deleted posts at the WeiboScope Search, by the Journalism and Media Studies Centre]
The post reads cryptically:

A full moon . . . Faith . . . [We are] pursuing . . . [We are] persisting . . . We are!
滿月了… 信念 . . . 在，追求 . . . 在，堅持 . . . 在！

None of those words would probably get caught up in China’s automated filters. But the Weibo post includes an image of a yellow umbrella, now a popular symbol of the movement in Hong Kong for universal suffrage.