Sky News correspondent Mark Stone was detained by Chinese police in Beijing this morning while in the middle of a live segment on the anniversary of the Tiananmen Square massacre. Most of the episode—include the moment they were detained, and Stone's conversations with one officer in the midst of their detention—was captured by Sky's camera operator and broadcast live to viewers of the English cable channel. (The entire incident was also captured by another police officer, who filmed the incident on a portable camera.) Stone says that they were detained for saying an unspecified word ("protest"? "Massacre"?) during the report; the English-speaking cop with whom he talks says they were stopped from filming because they didn't have the right permits. [TV Newser]