A video was uploaded on youtube about the protest in Xiamen. Early there were videos on China’s local online video websites. But those videos are now mostly deleted, for example, this one. There are also a few photos uploaded on flickr. A blogger, Linhu Buchong, used cell phone text messages to get in touch with his friends who were visiting Xiamen during the demonstration. The text messages, in Chinese, gave a vivid and detailed description of the demonstration.
-Also see CDT early post: Xiamen Government, Please Don’t Misread Public Opinion