A planned Adelaide protest against U.S. Secretary of Defence has been cancelled by South Australian Authorities, and those gathering at Parliament House without permission wil be "moved on" by police.

Protest spokesman Mr Mike Khizan said in a media release tonight that “Donald Rumsfeld, a man whom many millions of people around the world see as an international war criminal is coming to Adelaide, and in the name of ‘protecting’ him, free speech is being denied and the right to dissent attacked.