Americans!

Hi Americans and Americans only.

I have a project for my college to get first hand knowledge about Americans and whether assumptions made about them are actually true.
I hope you people can explain these assumptions that they are true to what extent.
Thanks alot.

Assumption 1:

Americans are full of FAT people. They eat potatoes salmon beef and all meat like crazy. like OMG wtp 50% of them are overweight?God if americans cut down 10% meat consumption maybe somalis and nigerians will get to fill their stomachs everyday.

Assumption 2:

Americans are usually rude people who tend to think that they are high up and they live in the bestest best country in the world.

Assumption 3:

America is unsafe, scary. High crime rates and its like, YOU CANT GO OUT AT NITE OR YOU'll get shot for no reason.

Note these are all commonly heard assumptions by me and I really wonder if it's actually true or not. Note I'm not agreeing with these statements.
Post your views about these statements please.

1: not where I live. Only 1 fat person in my whole school. Also, if we eat less, that doesnt send food to africa. All it does is make us eat less. When people say dont throw that out, that could feed a african family for a day. Thats nonsense. Me eating it wont make it feed them, nor will not buying it.

2: sure there are jerks, but not a majority of us are jerks, and among them, generally it isnt because they are american. We are in no way the undisputed #1 country.

3: Depends on the neighborhood. Not in mine. When I was little, we used to go out and play manhunt every night, and usually get sent back home by either an official township police, or our high grade volunteer policemen that actually TRAIN the paid ones.