I agree that parents who overfeed their children to the point of obesity need something doing! help, support - if there are really people out there who do not understand that veg is better for you than lard fried chips then this country is in a worst state than I thought!
It is unforgivable to allow your child to become obese. It is a failure of your duty of care as a parent. Yes there are children who have a medical reason for their weight - but do not try to shit me! They are few and far between. in the vast majority of cases, children are fat - called "pudgy" "solid" "well built" "chunky" etc by their parents. Any name but "fat" because "fat" is real. "Fat" slaps you in the face and demands you act. So call it "big boned" and you can ignore it. 
I will explain why this makes me so angry.
It was done to me.
I was a fat child, as was my sister. My mother piled our plates high with chips chips chips. everything and chips. Made out of potatoes that could easily have been a healthy jacket spud.
Everything fried in lard. Lots of sweets and crisps. I was a child. You cannot expect a young child to understand and to take responsibility for their weight. That is the parents job. I became a fat teen. Bullied to the point I tried to kill myself. Food was my enemy and my only friend. I got fatter and fatter and bullied more and more.
I am now 36 and at my biggest weighed 36 stone. I had a sleeve gastrectomy and am losing weight well.
And of course, as an adult, my weight is my responsibility. But my parents made me a fat child. Bullies ripped me to bits. At 18 it was like - here you are, fatty, your body is your problem. Enjoy your lifetime battle with the childhood eating patterns and the screwed up relationship with food. Sort it out now.
It makes me SO angry to see parents do that to a child. Do you have ANY idea how hard it is to have been a fat child, with NO idea about healthy eating and no self esteem and comfort eating to try to turn yourself around in adulthood?
And my mum? Barely ate. size 10 if that.
It can be child abuse, imo. And it needs dealing with. And we need to stop pussyfooting around the feelings of parents who are screwing with their kids health.