Assault and Battery, the unlawful and willful use of force or violence on a person. They are separate offenses. An assault is a demonstration of an unlawful intent to injure another person. Actual physical contact need not occur. A battery is the unlawful touching or striking of a person, done with intent to do harm. Battery is always accompanied by assault, but assault can occur without battery. The offenses are felonies if a weapon is involved; otherwise, they are usually misdemeanors. They are also torts; the injured person may sue for damages.
Prisons spy on inmates' telephone conversations to make sure the crooks aren't trafficking drugs or organizing gang riots from behind bars. But does this monitoring infringe on their rights?
If you need an analogy for PRISM, one apt comparison would be to HBO's show "The Wire." Just swap "U.S. government" for Baltimore police, "Internet data" for phone wiretaps, and name the target as "really anyone" instead of drug traffickers. Got it?