According to Global Voices, (which is an excellent source of grassroots opinion, btw) these posters are twittering around in China.
Construction workers support the Olympics. (This is about rushed construction projects in Beijing that has cost a few lives and caused many injuries so far.)
Don't talk, just support the Olympics. (Athletes silenced.)
Forget the massacre for the Olympics. (Tiananmen. My Chinese friends for some reason thought it was about Nanjing.)
Block the Internet for the Olympics. (Great Firewall of China.)
Disrespect? the people for the Olympics. (I suppose human rights in general, and the idea of enriching yourself through the Olympics: like having a hard-on for the Olympics. I can't find a direct translation for 民渎 in my dictionary.)
Global Voices also gathered a few opinions from Chinese people on
"patriotism" that seem to show that the agitation is slowly turning against the CPC.
I love this one:
Let me put it simple: Our impression of China is harmonic, and we think
foreigners have good impression on us. When these events occurred, we found not
everything is as perfect as we think, and this cognitive conflict makes our
anger more furious.
(Upate:) I saw the posters being used in the Hong Kong torch relay, here: http://www.guardian.co.uk/world/video/2008/may/02/hongkongtorch