You kill a famous person and your sentence is a deep one. If you kill a nobody, it seems you are out in half the time.
Chapman was sentenced to - twenty years to life. since 2000, his first parole hearing, he gets a parole hearing every two years. 7 or 8 hearings. denied.
Hinckley got released (he did kill a guy slowly).
two crimes - killing a man and killing a famous man.