You obviously are passionate about your beliefs, so why don't you sit down and brainstorm some ideas that aren't illegal and give vegans/animal activists a bad reputation?
Collect signatures or hand of leaflets like others have suggested. Maybe ask your teachers if you can make up a presentation for your class to educate your classmates about the meat/dairy/egg/fast food industries etc.
These things would be a lot more constructive in getting your point and beliefs across than vandalizing some property that will quickly be cleaned up.
I agree that most of the pamphlets probably would go to waste, but that wasn't my only suggestion.
I'd like to hear some of your ideas if all of mine are so ridiculous.
