Opposition supporters gathered for a second day on Saturday in central Beirut.
Anti-government protesters have promised to remain outside Prime Minister Fouad Siniora's office until he resigns.
The Lebanese army has thrown a ring of barbed wire and soldiers around the prime minister's office.
The prime minister (far right) met UK Foreign Secretary Margaret Beckett (far left). Mr Siniora said he would not be forced from office by mass protests.
Hezbollah leader Sheikh Hassan Nasrallah organised the protests to try to force the government to step down.
Shia Muslim supporters of Hezbollah take a few minutes to pray during the protests.
Hezbollah supporters have been joined by allies from Michel Aoun's Christian party.
These campers are settling in for a long stay in front of the prime minister's office.
The anti-government protesters say they are from all communities across Lebanon.
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