An eight-year-old at Scottsdale, Arizona’s Country Day School was threatened with expulsion after drawing a picture of soldier with a gun as an idea for a Halloween costume.

The child’s name has not been released–to protect his identity–but his parents pulled him from the school last week after he was threatened with expulsion for drawing a picture of a soldier with a gun, a ninja warrior with a gun, and a Star Wars character holding laser guns.

According to CBS 5 Arizona, the child’s father, who also remains anonymous, said this is a situation where the headmaster literally “bullied” his son over the drawings, and “bullied the parents” too.

The father said the headmaster pointed to writings in the eight-year-old’s journal where he wrote of adventures filled with “booby traps” and “shooting gadgets [like] a rope gun.” The boy also wrote about doing away with nuclear weapons, “saving the earth and protecting humanity.”

However, the headmaster focused on the drawings–like the one of the soldier with a gun–and said he “couldn’t guarantee the safety of other student’s with [the eight-year-old] around.”

Follow AWR Hawkins on Twitter @AWRHawkins.