Uploaded on 14 Dec 2010
WikiLeaks protesters have marched to Martin Place, sparking several violent clashes with police.
The crowd overwhelmingly voted to march despite being told they were not allowed by police.
The protesters have now been allowed to walk down George Street, but police and riot squad are blocking traffic.
Crowd numbers appear to be less than the 1000 people that were expected.
The protest suddenly turned violent as police and protesters clashed after riot police tried to take away a banner.
Inspector Chris Cramer from City Police said four people were arrested and are expected to be charged.