There IS reason. They get information and they process it like everyone else. The problem is in the information they get is completely different from what most of us get. America is not a country of dummies it is a country of misinformed and to a fair extent propagandized people.

I lived in the US too and met some very bright people who got the basic idea of "socialism" inasmuch as it meant that's it's not right that people live in filth on the street and die homeless because they had shit parents and no education. But, when I mentioned concepts like universal health care they were like 'omg communism' and it was very difficult to convince them that there was any middle ground between America as they saw and/or idealized it (i.e., the best place ever) and something maybe just a little bit better.