Arrests can occur without the Warning being given. If the officer later decides to interrogate the suspect, the warning must be given at that time. For example, if the police suspect and arrest a suspect and already have enough evidence to prove that suspect guilty they do not have to say the Miranda rights to the suspect. The Miranda rights are the protect oneself against self incrimination. The Miranda rights play a big role in our freedom because without them you can be forced to say something even if it is not true. Which was the case in cases before Miranda vs Arizona. Police officers would use brutal interrogation methods in order to get a suspect to confess even if it was not the truth. With the Miranda rights, a citizen does not have to say anything to the cops. Unless you confess or say something, the cops must look for more evidence themselves in order to prove the suspect