A colleague of mine recently returned from China where he was doing research for a really interesting book he’s writing on subverting authoritarian control. He relayed how the calendar in China is getting more crowded with sensitive dates. Each date requires the state to deploy at times considerable resources to preempt or quickly put down any unrest. He described how the vast majority of people assembled at a recent protest in Beijing were actually undercover police officers in plain clothes. This is not immediately obvious when watching the news on television. The undercover officers inadvertently make the turnout look far bigger than it actually is.