As a former obese kid, I'm all for fighting bullying against fat people, but at the same time I find all this "you're beautiful too, accept and love your body" unhealty at least.
God knows I spent hell years while at school, being the fat kid is something I wouldn't wish to my worst enemy, but when I see obese kids I'd like to beat the living shits out of their parents.
There's nothing ok with being obese, nothing to accept or love. Modern society should have the moral duty to fight this kind of unhealty habit, while at the same time protecting and helping fat people to change their lifestyle.
I don't hate obese people, don't misunderstand me, I was one of them in the past, that's why I know when I say that there's no more beautiful feeling of changing your life for the better, watching your body getting in shape, being able to shop with your friends without being ashamed of not being able to find shirts of your size or going to pub evenings without the fear that everyone's mocking at you.
I'm not saying to be obsessed with your body, to strive for the perfect shape. I mean, if you can more power to you. Just try everyday to live an healtier lifestile. It's not so hard, I didn't even follow a specific diet... just cut the shit, eat less, eat health, eat everything, try to cook starting with base ingredients and not with premade foods... and move a little. Just walk, go out, take you bicycle.