Clashes between protestors and police have turned violent at the International Mining and Resources Conference.

Hundreds of activists attempted to block the Melbourne Convention and Exhibition Centre from about 6am to stop the conference from going ahead but ended in two people being injured and 20 people arrested.

One protestor was taken to hospital for leg injuries after being hit by a police horse and one police officer is being treated at St Vincent’s Hospital.

“I think the police have been incredibly hostile … I’m quite shocked by how aggressive they’ve been,” protest organiser Emma Black said.

“We condemn the violence of the police but we’ve come into this with the clear principle of being non-violent.”

“We are here to non violently and peacefully exercise our right to protest and so far all we’ve seen is violence from the police.”