You will go to prison for the rest of your life, but not before they torture you. Many people who have killed a cop have been permanently disabled or stripped of a limb. It's kind of an us against them mentality. Criminals versus everybody, and police versus criminals. The police don't bother you if you are a productive member of society registered with the government, but they won't help you either, they'll just ignore you.
Cops only go after the criminals.
Because criminals are not registered with the government, they are not considered citizens of the United States. Therefore, they do not have to same rights as the rest of us. I once saw a group of cops unload on a gypsy camp at the beach one day. I hear it happens all the time. The police work for the government, the government is controlled by the wealthy, and the wealthy do not like the criminal class.