The incident occurred on the top deck of a Number 68X Kowloon bus on April 29. A young man observed that the middle-aged person in front of him was talking too loud on the mobile telephone. So he tapped the man’s shoulder and asked him to keep the volume down. This led to a vigorous response, including a string of obscenities. The entire proceedings were recorded by another passenger named John using a mobile camera phone. The film was uploaded on YouTube and then seen by the whole wide world. As of May 19, 1.2 million people have watched the video clip! (Update: 1.9 million as of May 26; ETTV cited a 5.9 million figure on May 27, which probably combines all the editions).