A masked man dresses before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. The festival runs until next Sunday and about 690 masked people from Spain and Portugal are participating, according to organizers. (Photo by Rafael Marchante/Reuters)

A masked man is painted before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

Masked people dress before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

Small bells are fitted by a masked man before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

A member of the “Las Caranto–as de San Sebastian” folk group poses for a portrait before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

A member of the “Mozos de Jaen” folk group poses for a portrait before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

A member of the “Caretos de Lazarim” folk group poses for a portrait before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

A member of the “Xinzo de Limia” folk group poses for a portrait before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

A member of the “Velhos de Bruco” folk group poses for a portrait before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

A member of the “Vijanera” folk group poses for a portrait before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

A member of the “Vijanera” folk group poses for a portrait before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

A member of the “Vijanera” folk group poses for a portrait before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

Members of the “Vijanera” folk group perform during the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

Members of the “Vijanera” folk group walk at Comercio square before the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

Members of the “Los Danzantes y Los Boteiros” folk group perform during the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

Members of the “Los Danzantes y Los Boteiros” folk group perform during the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

A member of the “Los Danzantes y Los Boteiros” folk group performs during the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

Members of the “Los Danzantes y Los Boteiros” folk group perform during the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

Members of the “Los Danzantes y Los Boteiros” folk group rest during the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

A member of the “Los Danzantes y Los Boteiros” folk group performs during the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

A member of the “Los Danzantes y Los Boteiros” folk group performs during the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

A member of the “Los Sidros” folk group performs during the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

Members of the “Caretos de Podence” folk group perform during the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)

Members of the “Caretos de Lagoa” folk group perform during the parade of the 10th International Festival of the Iberian Mask in Lisbon, Portugal May 9, 2015. (Photo by Rafael Marchante/Reuters)