Al-Jazeera Video: Thousands demonstrate on Syria's 'Friday of tribes'

"Titled 'Friday of the Tribes' in recognition of Syrian tribes participating in protests against the Syrian government, today saw large and bloody protests in a number of cities in Syria.

Use of helicopter- and gunfire was reported in the northern town of Maraat al-Numan.

Al Jazeera's Rula Amin reports from Lebanon."