>The inhabitants of a police state may experience restrictions on their mobility, or on their freedom to express or communicate political or other views, which are subject to police monitoring or enforcement. Political control may be exerted by means of a secret police force which operates outside the boundaries normally imposed by a constitutional state.
~100% of American communications are monitored by the government. We have secret courts that authorize the killing of American citizens. We have National Security Letters, requiring people to do exactly as they're told and not allowing them to tell anyone (in some cases even their lawyer) they've been served with one. Government agencies operate outside the bounds of the constitution on a routine and mass basis (NSA's phone spying program was found to be illegal/unconstitutional) with zero repercussions to government employees and agents who violated the law.
It also defines this:
>An electronic police state is one in which the government aggressively uses electronic technologies to record, organize, search, and distribute forensic evidence against its citizens
America is the poster child of an electronic police state. We do it more than any other country on a scale larger than any country in history. Americans are more monitored than any large group of people in the history of the world.