What do the Miranda rights guarantee?

Answer 1

The Miranda rights grant you the right to remain silent, so that you don't say something that incriminates yourself. They give you the right to an attorney whether or not you can afford one. They guarantee that the police can use what you say in court.

Answer 2

The Miranda Rights were created by and are enforced by the government. They are written into the 5th and 6th amendments, and the supreme court set reading them to suspects as a national precedent. If a suspect is not read his Miranda rights when they should be read, nothing he says is admissible in a court of law.