I think that's a naive view of Trump "supporters". For instance, it seems like Iranian-Americans were split on Clinton v. Trump [0][1]. I've also talked to quite a few people who voted for Trump but do not agree with his stance on borders or immigration. Finally, depicting all the people who voted for Trump as ignorant rednecks is probably not conductive to dialogue.
[0] http://www.usatoday.com/story/news/politics/elections/2016/0...
[1] https://news.ycombinator.com/item?id=13489227