In 1969, there were 502 convictions for tax fraud. Such cases called “white-collared crimes,” usually involve people with a good deal of money. Of those convicted, 20 percent ended up in jail. The fraud averaged $190,000 per case; their sentences averaged seven months.
That same year, for burglary and auto theft (crimes of the poor) 60 percent ended up in prison. The auto thefts averaged $992; the sentences averaged eighteen months. The burglaries averaged $321; the sentences averaged thirty-three months."
Howard Zinn, A People’s History of the United States