Basically, it outlaws engaging in protest, civil disobedience, harrassment, etc., against animal shelters, and the like. The link provides the actual text of the bill, check it for yourself. Call me what you will, but I'm for anything that sticks it to PETA and their ilk.
Suddenly, I feel like steak for dinner. *eg*
*much thanks to fiercerose for the story, who I hope forgives me for supporting it*