Sixth Amendment
Text
“In all criminal prosecutions, the accused shall enjoy the right to a speedy and public trial, by an impartial jury of the State and district wherein the crime shall have been committed, which district shall have been previously ascertained by law, and to be informed of the nature and cause of the accusation; to be confronted with the witnesses against him; to have compulsory process for obtaining witnesses in his favor, and to have the Assistance of Counsel for his defence.”
Plain English
If you’re charged with a crime, you get a speedy, public jury trial where the crime happened, to know the charges, confront witnesses, call your own, and have a lawyer.