If officers are acting in proper response to a potential emergency, they don't have to read you your rights.
Criminal appeals involve detailed procedure. They typically take months, if not longer, to play out.
Officers may be able to shoot to kill.
Some U.S. jurisdictions are using advanced formulas to evaluate the risks that defendants pose. Judges weigh these evaluations when considering pretrial release.
Witness impeachment is the process of challenging the credibility of a witness in trial. There are many ways by which a witness can be impeached.
Some acts are considered criminal only when minors commit them; these are called juvenile status offenses.