Behead those who insult the prophet.
Sydney Islamofascist Riot Roundup
Six police officers were injured and 17 others were treated for the effects of capsicum spray.
The protest began when a group of people gathered at Town Hall as part of a global protest against an anti-Islamic film.
The group began walking along George Street towards Martin Place, where they attempted to enter the US consulate located in the MLC Centre, before moving on to Hyde Park.
Superintendent Mark Walton says it's believed some people went to the protest armed, with a view to cause damage and assault police.
The rally was the latest in a spate of demonstrations at US embassies and consulates in the Middle East, Africa, Britain and elsewhere against the film, Innocence of Muslims.