Opposition activists in government-controlled Libya have told the BBC that Col Muammar Gaddafi is more unpopular than ever but is clinging on to power through intimidation and murder.
Tripoli is penetrated by fear and suspicion.
There are police stationed on every street corner and, more to the point, there are thought to be thousands of state agents in workplaces, schools and cafes.
They report back anything or anyone who could be regarded as remotely suspicious.
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