The U.S. Constitution regulates the division of labor between judge and jury. The Sixth Amendment guarantees [i]n all criminal prosecutions, the accused shall enjoy the right to a speedy and public trial, by an impartial jury. . . ..
The St. Patrick's Day Parade is America's oldest parade. It started in Boston in 1737.
Rex, one of the oldest Mardi Gras krewes, has been participating in parades since 1872, and established purple, gold and green as the iconic Mardi Gras colors. Louisiana is the only state in which Mardi Gras is a legal holiday. However, elaborate carnival festivities draw crowds in other parts of the United States during the Mardi Gras season as well, including Alabama and Mississippi. Each region has its own events and traditions.