The Nazis only got 2.6% of the vote in 1928, and many Germans did think of them as "low IQ thugs."
I'm not saying Nazis are a large group or are going to take over the US, but a lot of what people say about fringe groups now, isn't so different from what they said back in the 1920s.
Most of the German Nazis weren't great brains by any means.
What percentage of the vote did the American Nazi Party get in 2016?