Final answer:
The claim that a security guard doesn't need to inform an arrested person of the reason for arrest is False, as the accused rights, which include being informed of charges, are protected by law.
Step-by-step explanation:
The statement that a security guard does not have to tell the arrested person why he or she has been placed under arrest is False. In rule-of-law countries, the rights of the accused mandate that police must inform the individual at the time of their arrest of several key rights to protect their freedom.
These rights include the right to be informed of the charges, the right to remain silent, that anything said can be used against them in court, the right to legal counsel, and the right to defend themselves in court. These protections were emphasized through landmark cases like Vignera v. New York, Westover v. United States, and California v. Stewart, which served as a basis for the Miranda rights.