If a liberal is killed or hurt, if something catastrophic happens to them, they rejoice, because that validates their view of reality which is: they aren't capable of taking care of themselves and being self-sufficient, so they need the government to do it for them. If you are a conservative, this is completely counter-intuitive to you and nothing could be more alien,... like Superman being an alien (which is why he is an "alien": striving to be the best you can be and to take care of yourself and others has become "alien" to Americans since Obama and the socialists took over). Initially, during the scene of the tornado coming and Jonathan running out to save the dog from the car, I was tempted to interpret that as a metaphor of Superman saving us: we are like the dogs, helpless in the car and stuck, but he has the ability to free us and lay down his life to save us (there is a part when Clark goes to talk to an old school mate who became a priest because of how Clark's sacrifices witnessed to him, and Clark sits in front of an image of Jesus, linking Clark's identity to one of salvation as well). This interpretation, however, wasn't satisfying and didn't fit the rest of the film,... then, Interstellar came out.
Eat Your Art Out,
The Fine Art Diner