Activists the likes of Swede teenager Greta Thunberg are the “worst possible advocates" for the climate change cause, says journalist Joe Hildebrand.
It comes as Extinction Rebellion co-founder Gail Bradbrook was accused of being a hypocrite after admitting she drives a diesel car.
Ms Bradbrook also came under fire after it was reported tons of rubbish was left behind at one of their protests, costing the council over $94000 to clean up.
“They are absolutely terrible,” Mr Hildebrand told Sky News host Cory Bernardi.
“Greta Thunberg, who I’m not quite sure knows what she’s doing, are the worst possible advocates for this cause.
“It makes everyone who believes in this sort of stuff look like their nutters, it makes them look like an extremist fringe, cause, or issue instead of something that can actually be quite mainstream.”