Re: Sexism, Racism, Jingoism and Homophobia- That's entertainment!
I think your reading into things a bit too much. What you imply requires that these things be done with intent and malice. Do you seriously think, Michael Bay and other film makers sit around before making a film and try to come up with ways degrade the people that thy are trying to portray?
I'd like to point out that even James Cameron follows your second rule. Other than Dark Angel, he's never made anything where the lead role was not white. He must be racist.