Somewhere to perhaps ask is the animal liberation front.
http://www.animalliberationfront.com/
They are basically a direct-action forum, so people on there have BEEN in laboratorys or factory farms and have witnessed the horror that occurs in slaughter houses and in circuses. If you want first-hand info i recomend asking on there, although I don't think you'd get much out of them, because they don't discuss their direct action with other people. It's safer that way, and means that if they get convicted of anything there is no proof of it online.
They're an interesting bunch of people though
I know there are so many other sites like savebetty.com and meat.org, but the best place to get information is from the people that actually go into these situations. Ask people from alv (animal liberation victoria) There are a couple of guys on here from their youth section (animal liberation youth) who might be able to point you in the right direction.
Good luck

Have a lucky dancing bananna