Answers
1. Hand guns (Joker blazing away)
2. Drugs (syringe)
3. Alcohol (bottle)
4. Smoking (cigarette)
5. Religion (cross)
6. Sex (semi-nude Catwoman)
7. Strangulation (Batman choking Joker)
8. Breaking glass (everyone going through window)
9. Child endangerment (kid on Batman's back)
Not as easy as you thought, huh?