In these countries, poverty-stricken young children (we'll focus on the girls) are paid to strip and perform sexual acts in front of a webcam for adults. Because these girls are forbidden from attending school and getting jobs, (that's a separate discussion that I will surely delve into at a different time), they find that this is the only way to get food and money for their families.
But people and organizations are fighting this terrible phenomenon. With organizations like Terre des Hommes (from the Netherlands), we are slowly coming to a solution. Terre des Hommes has invented a computer model of a ten-year-old "girl" named Sweetie. The organization poses as Sweetie, and tracks down these terrible criminals via their social media. There have been tens of thousands of child victims, but instead of tens of thousands of convictions (before Terre des Hommes), there has only been six. Only six of these men who have forced children to perform sexual acts in front of them digitally have been arrested for this terrible crime. Just let me remind you: these men go on with their lives as if nothing has happened after they close their computers.