You really have to be plump to understand what heavy people go through. Just like it says in the film, if you denounce a race, you're a racist. What do we call people who show prejudice towards heavy individuals?
Nikki Blonsky, of "Hairspray" fame, does a beautiful acting job here detailing what heavy set people go through. Yes, they are literally outcasts in this society.
When the vicious in-kids nominate her for "Homecoming Queen," just for laughs, Blonsky decides to pursue the dream. She is running for all the nerds. It's time that we stop stereotyping what we automatically want in a homecoming queen.
What makes the film so good is that it's shown that the Blonsky character is without faults herself. The redemption of many of the characters by film's end is just great to watch.
We can all learn from this. If it weren't for all those health concerns regarding fat people, we could certainly say that fat is beautiful.