Famous faces from across the country have joined Taika Waititi in condemning racism.

Director Taika Waititi has starred in a video telling New Zealand, "racism needs your help".

"You don't have to be a full-on racist, just being a tiny bit racist is enough," he says.

Waititi got back in front of the camera for the Human Rights' Commission, Give Nothing to Racism campaign.

MORNING REPORT/RNZ The Human Rights Commission is warning racial intolerance and overt attacks are on the rise.

Answering some "frequently asked questions", Waititi said spreading racism was easy.

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"A smile, a cheeky little giggle, even a simple nod in agreement - it all adds up and it give others the message that it's okay," he said.

NZ Human Rights Commission Taika Waititi appeared in a 2017 campaign called Give Nothing To Racism.

Releasing the video, the Human Rights Commission said its aim was to "stop casual racism from growing into something more extreme".

The Give Nothing campaign had the backing of famous faces from across New Zealand. Musician Tiki Taane, actor Sam Neil and Sonny Bill Williams had also thrown their support behind the campaign.

The commission said one third of the complaints it received were about racism, "it isn't new and it's growing".

"Many Kiwis don't think racism is a problem. Yet those of us who don't consider ourselves 'racist' still allow casually racist thoughts / actions / comments in our lives," it said.

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