You should do a satirical rant...like really sarcastic. I did a satirical essay in high school about 'the evils of rock n roll'.. I said something like, "we should just murder all the drummers of the world, stab them with their drum stick, so they can't summon anymore demons with their noise"... I got all my info from a Jew and Gentile site and they said that in Africa, all the drum beats we use are used there to summon demons etc. Anyway, I got a wicked mark on that paper..woulda been better if I could've read it out loud.
So you could rant about how video games make kids kill people or something.
Or, if you just wanna do a normal rant, rant about porn stars, Bratz dolls (skank dolls making kids think it's ok to look like a hooch...I hate those things), how media always portrays 'pretty' girls as stick thin and tall.... I love ranting...