I see on a regular basis people who have poor levels of understanding on a subject and yet believe they know better than the experts. Climate deniers, anti-vax

I see on a regular basis people who have poor levels of understanding on a subject and yet believe they know better than the experts. Climate deniers, anti-vaxxers, anti-GMO, etc. I understand this isn't exactly what Dunning Kruger is talking about, but I don't have a better short hand explanation for it.