The right against self-incrimination is a legal principle that protects individuals from being compelled to testify or provide evidence that could incriminate themselves in a criminal case. This right is enshrined in the Fifth Amendment of the U.S. Constitution and serves as a crucial safeguard for defendants, ensuring they cannot be forced to provide testimony that may lead to their own conviction. This principle not only applies during trials but also during police interrogations and other legal proceedings where an individual's statements may be used against them.