| A still from an undated video released February 17, 2011 via YouTube allegedly shows protesters destroying a monument of Libyan leader Moammar Gadhafi's Green book. |
(CNN) -- Amid burials and prayers, tens of thousands of Libyans took to the streets Friday to air their discontent with four decades of Moammar Gadhafi, the longest-ruling president in the world, witnesses said.
At least 20 people were killed and 200 were injured in the northern Mediterranean city of Benghazi , Libya 's second largest, said a medical source in Benghazi , who was not identified for security reasons.