Independence Day is annually celebrated on July 4 and is often known as "the Fourth of July". It is the anniversary of the publication of the declaration of independence from Great Britain in 1776. Patriotic displays and family events are organized throughout the United States. Many people display the American flag on their homes. The celebrations have deep roots in the American tradition of political freedom. Very few people have to work on Independence Day. It is a day of family celebrations with picnics and barbecues, showing a great deal of emphasis on the American tradition of political freedom. Activities associated with the day include watermelon or hotdog eating competitions and sporting events, such as baseball games, three-legged races, swimming activities and tug-of-war games. Many people display the American flag outside their homes or buildings. Many communities arrange fireworks that are often accompanied by patriotic music. The most impressive fireworks are shown on television. Some employees use one or more of their vacation days to create a long weekend so that they can escape the heat at their favorite beach or vacation spot. Independence Day is a patriotic holiday for celebrating the positive aspects of the United States. Many politicians appear at public events to show their support for the history, heritage and people of their country. Above all, people in the United States express and give thanks for the freedom and liberties fought by the first generation of many of today's Americans. There are many public events, parades, shows and fireworks displays. This may cause local disruption to traffic. Public transit systems do not usually operate on their regular timetables.