Cinco de Mayo is a celebration held on May 5. It is celebrated primarily in the United States. It originated with Mexican-American communities in the American West as a way to commemorate the cause of freedom and democracy during the first years of the American Civil War, and today the date is observed in the United States as a celebration of Mexican heritage and pride. In the state of Puebla, the date is observed to commemorate the Mexican army's unlikely victory over French forces at the Battle of Puebla on May 5, 1862, under the leadership of General Ignacio Zaragoza Seguín. Cinco de Mayo is not Mexico's Independence Day.
In the United States, Cinco de Mayo is widely interpreted as a celebration of Mexican culture and heritage, particularly in areas with substantial Mexican-American populations. Chicano activists raised awareness of the holiday in the 1960s, in part because they identified with the victory of indigenous Mexicans over European invaders during the Battle of Puebla. Today, revelers mark the occasion with parades, parties, mariachi music, Mexican folk dancing and traditional foods such as tacos and mole poblano. Some of the largest festivals are held in Los Angeles, Chicago and Houston.