Violence erupted in Hong Kong on Wednesday as thousands of protesters amassed near the governments headquarters.

Police have fired rubber bullets and tear gas at the crowds as anger about a contentious extradition bill spilled into violence.

A legislative session on the bill was delayed as an overwhelmingly young crowd of demonstrators filled nearby streets, overturned barriers and tussled with police outside the offices where the bill was due to be discussed.

If you havent been keeping up with the news, heres the lowdown on why the bill has sparked such a large scale protest.

First, is Hong Kong part of China?