Women spray their designs on a wall during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. The LATA 65 organization is an initiative for the elderly in the area of urban art. Since it began in 2012, they have introduced the world of graffiti to over 100 senior citizens, giving workshops in different neighborhoods of Lisbon. (Photo by Rafael Marchante/Reuters)

Women spray their designs on a wall during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. (Photo by Rafael Marchante/Reuters)

Ivone, 86, shows a spraycan during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. (Photo by Rafael Marchante/Reuters)

Women spray their designs on a wall during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. (Photo by Rafael Marchante/Reuters)

Participants pose at the end of a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. (Photo by Rafael Marchante/Reuters)

Participants spray on a wall during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. (Photo by Rafael Marchante/Reuters)

Women put gloves and masks on during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. (Photo by Rafael Marchante/Reuters)

A woman sprays her design on a wall during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. (Photo by Rafael Marchante/Reuters)

A man looks at a design during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 13, 2015. (Photo by Rafael Marchante/Reuters)

Hugo, 85, poses for a portrait during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. (Photo by Rafael Marchante/Reuters)

A design of Ivone (not pictured), 86, is seen on a wall during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. (Photo by Rafael Marchante/Reuters)

A woman sprays her design on a wall during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. (Photo by Rafael Marchante/Reuters)

A woman rests during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. (Photo by Rafael Marchante/Reuters)