AUUUGGGH
allow me to enlighten you :)
He confiscated people's gold
Created the National Recovery Act, which was like a half step away from full fascism (actual fascism not whatever people like to call it nowadays) because it controlled prices, and wages, and products
He got the US hooked on social security (most might disagree with me not liking that)
Spat in Washington's face and got elected four times
And my personal favorite, in the middle of a depression, when many people were struggling to afford food, he literally ordered the destruction of millions of acres of crops and killed millions of animals to drive up the price of food, on a population that again, had a large portion starving
So..... I hate him with every fiber of my being