What is the overall TONE of the passage above?

“We fought for RUF; the army is the enemy. We fought for freedom, and the army killed my family and destroyed my village. I will kill any of those army bastards every time I get the chance to do so.” The boy took off his shirt to fight Mambu, and on his arm was the RUF tattoo.” “They are rebels,” Mambu shouted, and before he could reach for his bayonet, the boy punched him in the face. He fell, and when he got up, his nose was bleeding. The rebel boys drew out the few bayonets they had and rushed toward us. It was war all over again. Perhaps the naive foreigners thought that removing us from the war would lessen our hatred for the RUF. It hadn’t crossed their minds that a change in environment wouldn’t immediately make us normal boys; we were dangerous and brainwashed to kill. They had just started this process of rehabilitation, so this was one of the first lessons they had to learn” (Beah 134-135).