Quienes Marta?

This was taken in Puerta del Sol, Madrid.  There were some people passing out pamphlets trying to raise awareness about a girl, Marta.  

"Marta del Castillo was last seen alive by a neighbour in the lobby of her apartment block on the evening of January 24, this year. A massive search operation ensued until police secured a confession from her ex-boyfriend, 19-year-old Miguel Carcaño, on February 13. At the time, police were told that Miguel killed Marta with a blow to her head from a heavy glass ashtray during a heated argument at his Calle Leon XIII apartment. Miguel and his close friend Samuel claimed they had disposed of her body by throwing it into the Guadalquivir River with the help of teenager El Cuco. His older brother Francisco helped clean the apartment to remove any evidence. Bloodstains were found on a wheelchair that belonged to Miguel’s dead mother, thought to have been used to transport Marta’s body to a car El Cuco had borrowed from his mother. "

Euroweeklynews.com: "New Arrest in Missing Sevilla teenager Marta del Castillo case"