Full column here.
Note one of the conclusions of the researchers, as reported by U.C. Berkeley News:
Disparate conservatives share a resistance to change and acceptance of inequality, the authors said. Hitler, Mussolini, and former President Ronald Reagan were individuals, but all were right-wing conservatives because they preached a return to an idealized past and condoned inequality in some form. Talk host Rush Limbaugh can be described the same way, the authors commented in a published reply to the article.