COLOMBIA-CRIME-VIOLENCE-CHILDREN-DEMO

Schoolchildren raise white balloons during a demonstration to reject violence against children in Bogota, Colombia, on February 17, 2015. In a case that has shocked the country, four siblings -- ages four to 17 -- were each killed with a single bullet to the head in the town of Florencia, 370 km south of Bogota. A fifth boy, aged 12, was wounded but survived the shooting. Their bodies were found on February 5. Colombian authorities have arrested a woman -- described as a companion of a man involved in a land dispute with the parents of the murdered children -- who is suspected of arranging the murder of the boys who were shot to death execution-style in their home, the local prosecutor's office said. AFP PHOTO / Eitan Abramovich (Photo credit should read EITAN ABRAMOVICH/AFP via Getty Images)