Dangerous Rocks : Can both sides back off peacefully ? The China says it has expressed concern to the anti-Japanese authorities . U.S. says it is investigating what it describes as an `` isolated case '' about 50 protesters gathered around the car , some throwing objects . The incident took place amid Chinese protests in China .
The China says it has expressed concern to the anti-Japanese authorities . U.S. says it is investigating what it describes as an `` isolated case '' about 50 protesters gathered around the car , some throwing objects . The incident took place amid Chinese protests in China .