The 5th and 6th Amendment
The Fifth Amendment is a number of rights relevent to criminal and civil legal proceedings. In criminal cases, the fifth amendment guarantees the right to a grand jury. The fifth amendment forbids "double jeopardy," and protects against self-incrimination. it also requires that "due process of law" be part of any proceeding that denies a citizen "life,liberty or property" and requires the government to compensate citizens when it takes private property for public use.
The Sixth Amendment guarantees the rights of criminal defendants. The Sixth Amendment includes the right to a public trial without unnecessary delay, the defendant also has the right to a lawyer, the right to an impartial jury and also the right to know who your accusers are and the charges and evidence against you. It has been most tested in a series of cases involving terrorism but much more often figures in cases that involve jury selection or the protection of witnesses, including victims of sex crimes as well as witnesses in need of protection from retaliation.