If it interests you, you could write about the 9/11 controversy and argue the facts that support a terrorist attack (versus a conspiracy). Assuming that interests you, of course.

You could easily spend 15 pages arguing the merits of organic foods versus conventional. Or vegetarianism. Or a national health care plan for America. (I'm guessing you're in the U.S.). Or the benefits of education. Or the importance of combatting poverty and illiteracy, which influence crime. Or on one side or another of the gay marriage issue. Or against cigarette smoking. Or in favor of exercise and nutrition programs to battle the increasing obesity epidemic in this country. Or animal welfare. Or abortion rights. Or environmental matters such as less reliance on fossil fuels. Or against terrorism. Or against the war in Iraq.

Gosh, the list goes on and on. I used to be an English teacher, so I can usually think of topics to write about. Probably my own interests were coloring many of those suggestions, but some of them might interest you, too. Now I'm a medical student, and I badly need to sign off and do my own homework, but I'm procrastinating. Working on someone else's homework is much more interesting!