Mexican celebration of the 5th of May. This seems like another pseudo-holiday that got taken over by the beer manufacturers & their marketing departments. In California you’ll see poster advertisements on every cantina window months in advance. This is not Mexico’s Independence Day, as many so erroneously think. More information on the holiday Cinco de Mayo, see below –
http://www.vivacincodemayo.org/history.htm
http://en.wikipedia.org/wiki/Cinco_de_Mayo
Various Cities & Towns in California
Some of the events to mention –
Los Angeles @ Olvera Street; 213-628-1274
http://www.cincodemayolosangeles.com
San Diego Old Town – Fiesta Cinco de Mayo
http://www.fiestacincodemayo.com
Santa Barbara Festival
http://www.cincodemayosb.com