An article in the 02/01/10 L.A. Times featured rants from people who feel their rights are being circumvented to accommodate outspoken fat people. Believing you have the right to be fat is far different from believing others must accommodate your fat. It harkens back to the preposterous claims of "smokers' rights", when the nicotine addicts demanded unlimited access to our breathing air. Fat people are demanding rights that supercede those of normal weighted people, and why not? Smokers demanded rights that superceded the rights of the vast majority who do not smoke, and for a hundred years, got them.
Entitlement is a fascinating issue.
However, the Big Brother aspect of rules and regulations against fat people does help make it a little sinister. Individuals can't control the banks, the mortgage companies, the government, the war —so they pursue an issue they feel they can control and make a difference. They don't know how to remedy things when the credit card company arbitrarily slashes their credit limit, making it impossible to buy things and contribute to economic recovery, but when the fat guy next to them on the plane puts his arm rest up so he can spill over into their seat —now THAT they can control.