The Race Discrimination Commissioner says the next federal government must amend the constitution to make it impossible to suspend the Racial Discrimination Act.

The act was suspended in 2007 to roll out the Northern Territory intervention in Aboriginal communities and has yet to be fully reinstated.

A United Nations report has condemned the intervention saying it shows discrimination is structurally embedded in Australia.

Commissioner Graeme Innes says the UN committee was shocked at the Federal Government's policy in the Northern Territory.

"The actions that needed to be taken in the Northern Territory could have been done on a non-discriminatory basis," he said.

"So what the committee is recommending to Australia is not only we completely remove the suspension - which we haven't yet done - but we entrench in the constitution a provision so that never again can race discrimination law be suspended in Australia."

Mr Innes says Australia is in denial about being a racist country.

"We need to do much better in terms of having a national multicultural policy, which we haven't had for almost 15 years, which includes an anti-racism strategy," he said.

"I think the problem for Australia is that we try to pretend that racism isn't there. What we need to do is face the facts that there are elements of racism in this country and take some positive action to address it."