Dokdo is a small Korean islet which Japan continues to argue ownership over. This week Shimane Prefecture assembly passed a bill claiming Takeshima (Japanese name for Dokdo) as a part of Shimane Prefecture.
Shimane Prefecture officials and assemblymen made a grave mistake. If their intention was to bring more attention to fishing rights problem, they certainly got it in the worst way possible.
Japanese government also made the stupid mistake of underestimating how intensely Koreans feel about Dokdo. While most Japanese are ambivalent about Dokdo, 99% of Koreans feel very strongly about Dokdo.
If you find it difficult to understand why Koreans are so upset over a pointless bill passed by Japanese prefacture over a pile of rocks, just ask the person next to you to kick you between the legs and then ask yourself why you are rolling on the ground.