It's because articles like this (via Howard French):

Since the unrest in Tibet began, everything Beijing has done and said has reinforced its critics’ case. The foreign press is accused, in strident terms, of lying, while its capacity to report directly is cut off by Beijing.

...and this (via Aether):

如果CCTV从3月10日就及时、全面、客观、公开地报道西藏事件，CNN的报道会有市场吗？

...don't get translated that the conversation takes so long.