Thanks Chsiao, “the torch itself has been extinguished at least twice". And the video said, those information are not on Chinese main TV because of the censorship.
Olympic symbols in wikipedia said:
The emblem’s popularity and widespread use began during the lead-up to the 1936 Summer Olympics in Berlin. Carl Diem, president of the Organizing Committee of the 1936 Summer Olympics, wanted to hold a torchbearers’ ceremony in the stadium at Delphi, site of the famous oracle, where the Pythian Games were also held. For this reason he ordered construction of a milestone with the Olympic rings carved in the sides, and that a torchbearer should carry the flame along with an escort of three others from there to Berlin. The ceremony was celebrated but the stone was never removed. Later, two British authors Lynn and Gray Poole when visiting Delphi in the late 1950s saw the stone and reported in their “History of the Ancient Games" that the Olympic rings design came from ancient Greece. This has become known as “Carl Diem’s Stone". This created a myth that the symbol had an ancient Greek origin. The rings would subsequently be featured prominently in Nazi images in 1936 as part of an effort to glorify the Third Reich.
When trying to de-mythify the torch and Olympic symbols and decoded the meaning they carries, I just wondered what kind of meaning do such international protest relay carries out and demonstrate?