Read the three lines right above that quote. Those are the experts.
Adrienne McCarthy, a researcher at Kansas State University, told the Guardian why this is particularly troubling.
“It’s propaganda 101,” she said. “Equating people concerned about climate change with Nazis can have long-term impacts on young, impressionable people. The beliefs PragerU are pushing forward overlap with far-right extremist beliefs. The fear is that they will bring this sort of extremist beliefs into mainstream society.”
In a piece for Mother Jones, principal climate scientist at the Union of Concerned Scientists Kristina Dahl annotated the transcript of one of these videos, demonstrating how the visuals and script are trying to convince the viewer to ignore the findings of scientific research.