PMoreno,
Of course this is fictional.
However, if you choose to view the Marine's actions as representative of religious acts of violence, and then to make the assumption that the "unintelligent " need to somehow use physical force to make their point, then I see it necessary to once again point out the one MAJOR flaw in the professors "lesson".
You honestly can not prove a negative.
The punch line (pun intended) simply reinforces this notion.
If we choose to delve further into this anectdote, then perhaps we should point out the fact that an entire classroom chose dumbfounded silence rather than contradict an insane professors claims.
Is that how we want our children to be taught?
Please realize that I accept the above story as the joke it's intended to be. I simply had to respond when you attempted to make it into something it wasn't.
Peace.