"Violence depicted in adolescent political cartooning perceived as a security threat? What a bunch ignorant, provincial, paranoid boffos."

Welcome to a post-Columbine world. Have you forgotten all the stories about kids suspended or worse for writing stories or drawing pictures that their teachers considered violent? The child who was suspended for having pointed rather than blunt sissors in her backpack? School systems went to full CYA mode years ago. There's zero tolerance for anything violent. Edgar Allen Poe would never graduate from school in this post-modern world.

From what I heard the Secret Service was notified there was an issue by the school and after interviewing the kid took no action. They would have been irresponsible not to respond.