Locusts a reason to celebrate?

Tomorrow marks the Festival of Our Lady of Mercy (La festa de merced). In 1687, a plague of locusts were driven out of Barcelona, Spain by the Virgin of Mercy. To this day, the Festival of Our Lady of Mercy stands as one of the biggest and loudest festivals in Spain where hundreds of artists and performers play at venues around the city. The museums in Barcelona are also free on this day. Tucson has no planned events as it is recovering from Mexican Independence Day celebrations and is planning ahead for October, the month dedicated to the Holy Rosary.