Folk dancers in the Cinco de Mayo Parade in New York on Sunday, May 5, 2013. The holiday commemorates a victory of Mexican forces led by General Ignacio Zaragoza Segu&iacute;n over French forces in the Battle of Puebla on May 5, 1862. In the United States Mexican-Americans celebrate with parades and festivals as a show of ethnic pride.  (&copy; Richard B. Levine)