I'm not sure this is done intentionally or not, but especially with the new teaser it really sounds as though they might be going with Klingons as a sort of stand-in for the alt-right/conservative part of society. With all the talk about the fear of being diluted, overrun and replaced by others they really remind me of people in our real world that spew hate for everything that's different because it allegedly is coming to destroy their culture and heritage. I must say, if that's the angle the writers are truly going for, I'm really excited and applaud the effort.