Very nice logic - but what about the fact that you conviniently ignored blaming the 7th century text book. Maybe the whole syllabus that you tern as filth and 3rd grade material is just misunderstood as you being that because of your skewed views. Maybe the teacher was abused by his neighbor or principal and his house taken away or his sister raped or beaten to death, that has left him with so much bitterness with life, and wants to fight for the injustice. He only teaches and understands the same language the world deals with him, in dealing with him so injustly that he starts to impart a knowledge or revenge, to the syllabus he adds abundantly his own logic to gain his respecte and for revenge. The kid learns ths same and comes home, and uses the same bad language but you forget the fact that he might have been abused by his father(own homeland he lives in) and provoked by his neighbors, and friends. So buddy there are always two sides to teh coin, picking and choosing a scenario such a complicated one at that does not help explain the situation or to diffuse it but to wholely satisfy your own urges and further your ideology. Lets us stop the mis infromation and lets us stop the hate. Let us all live together as one natoin.
