Triple J's Hack program and its host Tom Tilley have come under fire for giving airtime to a white nationalist.

On Monday night's program, Tilley grilled one of the organisers of the deadly Charlottesville protests. One woman was killed and several injured over the weekend after a car ploughed into a group of people protesting a white nationalist rally.

Speaking from the US, Eli Mosley told Hack listeners he and other so-called alt-right protesters were "forced into violence" due to the actions of counter protesters and the "incompetence and negligence" of local police.

Tilley, who has been hosting Hack for the past six years, pointed out pictures from the protests showed white nationalists carrying firelit torches and wearing army fatigues.