and forage.
However, courts are about, in this case, what criminal law forbids. Not even that, actually, but about whether the prosecution has proven violation of law beyond the shadow of any reasonable doubt--obviously, a very high standard. (Yes, people get wrongly convicted under that standard every year, maybe every week, but it is still a high standard.)
But, there was something else at work here.
The animal protection groups supported this plaintiff for years as his only source of income. That cast a lot of doubt on his credibility and came close to violating prohibitions against champerty and maintenance--quite longstanding in the British legal system, which we adoped.
http://en.wikipedia.org/wiki/Champerty_and_maintenanceThere is a conflict between our distate for champerty and maintence and our social value of keeping the courtroom doors wide open, including to poor people. (We do that because we don't want people "taking the law into their own hands," i.e., using violence.)
However, in this case, the lawsuit may have been less about compensation for any injury that the plaintiff actually suffered and more about the ASPCA wanting to bankrupt the circus or to make a point about circuses. Those are maybe arguments to be made to a legislature, rather than to a court. And you can pick up the judge's annoyance about that, even from the article.