The food vs fuel argument is specious, corn doesn't feed humans it feeds livestock. Prior to cheap corn, beef cut grass, hogs recycled and chickens were seasoning – on special occasions (a chicken in every pot – <on Sunday> was the wish of some French King in the 1700s))
The growing global working class wants Egg & Sausage McMuffins and Big Macs with cheese and milkshakes, that is what will cause poor people to starve.
I'm sure everyone knows this but I'll repeat it anyway, whole corn feed value (approx) is 3/4 carbs and 1/4 protein/fat, when fed whole it requires additional protein. When you remove the starch by distilling ethanol you're left with a high protein feed that is almost 150% as nutritious per pound as whole corn. The net effect is that for every 2bu of corn used to make ethanol there is the equivalent of one bu of (whole corn) feed for livestock left over.
So, like a lot of FF demand can be attributed to growing wages, so can corn and livestock prices. You can see in this chart from '10 that feed has been depressed a little but not as much as you might guess.
P.S. Which isn't to say I support ethanol but facts are facts. Corn at this price is ruinous to marginal land, a groundwater depleter and ethanol itself is only barely is an energy positive - an oil extender at best. Not to mention the additional demand from ethanol - and the drought - has driven prices high enough to cost me perhaps a quarter to a third of my income so far this year.