The point with that to shock the crowd and make it look like he really hates immigrants. Its to get people to boo him, but I don't know the KKK might like him now? To be honest, if they were really at the border and those were real immigrants I would have a problem with it, but since it wasn't and those were just some actors they got, I got no issue about it at all. As a smark, I wouldn't get so worked up over it through.