The official day when patriotic civilians get to express their freedom by lighting up a dozen of rockets made of gunpowder and cardboard and watching them propel high in the sky, creating an atmosphere of a potassium nitrate-scented aroma. Originally fireworks were used to shoot down unidentified flying objects (UFOs) when they usually fly around during the period of July 4th before Thomas Jefferson and the rest of the delegates declared it as a national holiday. Remade into a hit movie starring Will Smith.