I think it would be useful for people to see the link you reference: http://www.ihr.org/jhr/v06/v06p--9_Bennett.html. It has been my experience that sometimes (less nowadays, but a lot when I was younger) people who take what is commonly (but not always accurately) referred to as "right wing" views, often carry a lot of baggage like anti-Semitism, racism, and the like. For example, when I was growing up, the open opposition of some to even the most modest demands of the civil rights movement, such as the right to vote, unfortunately made it harder to accept from these same people other views that turned out to be more or less correct -- such as extremely strong opposition to the tyrannical Soviet Union (clearly correct) and the war in Vietnam (in my opinion, less correct, but still analytically linked to the former). I'm afraid that the question "[w]hat are they thinking" has a rather simple answer: they have clear and unambiguous sympathy for these ugly and incorrect views.