During the Libyan Civil War both sides used child soldiers, but the rebels were particularly notorious for the use of child soldiers. Particularly the Muslim Brotherhood’s Feb 17 Brigades.
You know that time Republicans decided to illegally overthrow the Libyan regime and replace it with a bunch of Islamist militias? And then the Republicans spent months ignoring warnings about Al Qaeda in Benghazi, used the Muslim Brotherhood as their defensive militia and slept through reports of an attack, and then spent the next few weeks lying about it.
Here is the only way the world actually works. There are civilized countries and savage countries. In a civilized country, the government and people may not like you, they may cheat you and take advantage of you in all sorts of ways, but they will not drag your corpse into the street for their amusement. In savage countries they will do that unless they have good reason to fear the consequences.