Each of the 78 municipalities of Puerto Rico has adopted flags which represent the municipality and its people, employing designs that oftentimes derive their symbolism from the municipality's coat of arms. Most of the political parties in Puerto Rico also have their own flags, which represent and symbolize the political ideals of its members. These political party flags are usually displayed in public during political rallies, meetings, or parades in a show of political strength and unity. Various sports associations in Puerto Rico have adopted flags which represent them and which are used during competitions and other sport events.