protest - Call for a one-month boycot of Japanese goods

Bloggers are calling for a one-month boycot of Japanese goods during May, reports Danwei. The effect of such a call might cause much more damage than the occassional broken window we have seen during the weekend.
At both the Financial Times and Interfax Japanese companies have already expressed their concerns for more damaging actions. While it might be expected that traditional media will not openly support such a boycot, the word might get out much more easy on the internet.