Libya protests: Activists call for 'day of anger'

Anti-government activists in Libya have been using social networking sites to rally support for protests on what they are describing as a "day of anger". 

There were reports of clashes in two cities late on Wednesday, with about four people reported dead in the eastern city of al-Bayda.
Dozens of people were injured in violent demonstrations on Tuesday night in the eastern city of Benghazi.
The unrest there followed the detention of an outspoken government critic.
Pro-democracy protests have recently swept through several Arab nations, with the presidents of Tunisia and Egypt forced to resign amid growing unrest.
But this week's demonstrations were the first display of defiance in Libya, where dissent is rarely tolerated.