Today's artist is Brazilian-born L7m. His biography states the messages behind his pieces, found in Sao Paulo, Luxembourg and Belgium: "Everything generates the chaos, [from] the mixture of outlooks and feelings to the materials and medias utilized. The revolt by the human sorrow, the beauty of life, the city's disarray, the neglect and the surroundings, all this things transposed and influencing the works of this artist, who evolved with all his feelings focused in the street art."
I'll let his artwork do the rest of the talking.
*Discovered on Street Art Utopia and Street Art Utopia