When a person is detained by the police for allegedly participating in criminal acts, he or she has several rights under the Spanish Constitution and other laws. Article 17 of the Constitution guarantees that no one may be deprived of his liberty, if it is not in accordance with what the Law establishes. It also recognizes the right of any detained person to initiate the "habeas corpus" procedure in the event that he/she considers that his/her detention is not in…