I think that there are a few different types of alienation. As we saw in Little Miss Sunshine, each character had a trait which alienated them in one way or another from the other characters. For some it was their personality, others a secret they kept hidden, others a life goal. This type of alienation is by choice. Wether by omission or by virtue of their personality, each character chose to alienate themselves in a certain way from the others. This differs from the type of alienation detailed in “Invisible Man”. The protagonist in the work is alienated from society because of his race, not by choice. He attempts to acclimate himself in society by trying to get noticed and not be as much of a social pariah. He fails, but I think it shows a sharp comparison between alienation by choice and alienation by an outside force.
I think that Alienation in general is normal in any society. There has to be a balance between those who are most internally involved in society and those who participate from a distance. The imbalance comes when those who wish to participate in society are stopped by others, this is alienation. I don’t think that alienation can be stopped unless all people are first valued equally in society. Once everyone was equal, they could participate in society as little or as much as they wish. But equality for all has been a problem for America since it’s beginning, and all around the world, and as long as equality is a problem, alienation will be a problem too.