This guy Sunstein is really something else:
Sure wonder how he would argue that "a piece of property" can bring a lawsuit. Scientists have some evidence that plants can feel "pain". I don't really think we're in danger of being sued by a head of lettuce, but what about food animals? We already know the guy is against hunting.In the Harvard paper, Sunstein even suggests animals could be granted the right to sue humans in court.
"We could even grant animals a right to bring suit without insisting that animals are in some general sense 'persons,' or that they are not property," he wrote.
The Harvard paper referred to cites an 1879 discourse on slavery in France. I think the reference is mis-used by Sunstein.