Roosevelt High School student Jabre White, 17, recalled to The Des Moines Register the way his teacher, Shawn McCurtain, had told the class to head downstairs for a final exam in economics in mid-May.

“Yes, sir,” Jabre White remembered telling the teacher.

“You meant to say, ‘Yes, sir, master,’” McCurtain allegedly replied....

“Who the f*ck are you talking to?” Jabre White reportedly told McCurtain. “You’re nobody’s master, and this is not the slave days.”