I live in America. I run into fat people every single fucking day of my life, and I am kind and courteous to them. Even when I encounter a woman with thighs so large they could be turned into a god damn sleeping bag, and I internally retch to myself, I keep my mouth shut about it.
But to have these people tell me that I'm wrong for finding them repulsive. To listen to these people say that I should find them beautiful or I'm the asshole. To see these people point at actually healthy women online and say "ewww eat a sandwich, you anorexic bitch!" That's where I draw the fucking line.
You can have your cake and eat it too, and then eat every other cake north of the equator, but you can't tell me to like it.