text: In the last week of July , many of the town 's 16,000 inhabitants parade and fight in richly costumed companies los piratas , los tuareg , and los moros del Rif among them re-enacting the defeat in 1538 of the Algerian pirate Zala Arraez , a Mediterranean scourge who started it all by sacking the castle in a daring dawn raid .
  
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  The castle was once sacked at dawn in a daring raid .