Chinese internet users are planning a one-day boycott of the web on July 1st to draw attention to the introduction of the controversial government-mandated internet filter on all new machines.

The boycott has a high-profile supporter in Ai Weiwei (pictured), who helped design the Bird’s Nest stadium used in last year’s Beijing Summer Olympics. Writing in Twitter he said (translated) “Stop any online activities, including working, reading, chatting, blogging, gaming and mailing. Don’t explain your behavior.”

That last request is designed so that protesters can make their point with no fear of reprisals. An individual staying off-line for the day can’t be accused of doing anything wrong, but the combined effects of all the protesters should be easily measurable. The boycott may also serve as a quiet way of making a broader political protest as July 1st is also the anniversary of the foundation of China’s ruling Communist party.