While feeling guilty about supplanting Scott's great post on Subjunctive Tu Quoques, (which you should read first–and while I'm at it, how did I not know about this? All that time studying particles in Greek! Here's the full link. Bravo.) I thought I might pick some low hanging fruit.
An absolute treasure trove of logical fallacies can be found through the various smear-campaigns of Center for Consumer Freedom. In case you haven't come across these folks before, NYT had a short piece a few months ago describing CCF's campaigns on behalf of various corporate interests against not for profit advocacy groups like Mothers Against Drunk Driving and the Humane Society of the United States. I'm sure Christopher Buckley didn't have these guys in mind when he wrote Thank you for Smoking but the comedy at times is equally broad.
Anyway, HSUS is squarely within their sights and sites these days as are any attempts to regulate "humane" conditions for livestock. Enter David Martosko, the mind behind Humanewatch.org, in the Sacramento Bee:
What's really at stake here is that word: "humane." HSUS seems to want a monopoly on it, even though other animal welfare-oriented groups – and plenty of scientists – disagree with its agenda. And that agenda is where the rubber meets the road: HSUS is run by vegans who don't believe anyone should eat eggs, regardless of how or where they were produced.
Most recently, HSUS has opposed attempts by California lawmakers to specifically define the standards mandated by Proposition 2. The very vague language that California voters approved in 2008 gives HSUS's enormous legal team enough wiggle room to hassle farmers who don't see things HSUS's way.
Of course, enriched chicken cages could be furnished with couches, Jacuzzis, treadmills and iPads, and activists who believe in "rights" for birds would still complain about them. HSUS is among them. And its vision of what's "humane" is outside the mainstream.
Since HSUS's view is that a vegan diet is the only "humane" way to eat, this whole "cage-free" egg campaign is a sideshow. It's a temporary step toward the group's larger goal.
Much of the argument against HSUS you find here and elsewhere has to do with what they "really want." Here it includes a "monopoly" on the word "humane" (whatever that means) and forcing everyone to eat tofu-scramble rather than scrambled eggs. Often evidence is trotted out in support of this agenda comprised of quotations from employees and fellow-travelers of HSUS, not occasionally, taken baldly out of context.
Nevertheless, there's an interesting argument from true intention here that is sort of like a circumstantial ad hominem but seems interestingly different. It looks like the structure is something along the lines of:
1. P supports policy x (cage free housing).
2. P's real intention is to adopt radical end y (veganism).
3. Therefore, we should resist policy x (cage free housing).
It's not a simple ad hominem in this form since it doesn't deny the truth of a claim, though it could be formulated as a circumstantial ad hominem. What seems to be added is an implicit slippery slope argument that suggests that because P supports y we should not allow x since it would advance y. This is the sort of argument that lots of tea-party folks seem to fall back on–Obama's real intention is to turn the country into a socialist state, Obama advocates health care reform,Therefore we should resist health care reform. But, it's certainly not limited to the right-wing. We hear similar arguments made about corporations and certain other administrations. I don't have an example to hand right now, but I'm sure we can come up with a bunch. It's really the laziest of all argumentative vices.
In the case of President Obama the "real intention" premise is so laughable that the logical flaw in the argument is overshadowed by the obvious falsity of the premise. Most of these "real intentions"premises have a cartoonish world domination feel to them. But in the HSUS case it is, perhaps, in some sense true that HSUS are advocates of veganism (or their CEO is, or many of their members are–I'm not sure how to think about ascriptions of beliefs to organizations) and maybe even want to further that end through HSUS's actions. But, even if that's true, the conclusion does not seem to follow without some additional premises connecting x and y more closely, just like slippery slopes arguments.
Nevertheless, it is a really bad argument–even if HSUS does believe that everyone should become vegan this says little about whether their opposition to enriched cage housing as less humane than free range or other cage-less alternatives is well founded. Though to be fair to Martosko he does offer appeals to several expert organizations (American Humane Association, Temple Grandin and the American Veterinary Medical Association) who do hold that enriched cage housing is humane. But, rather than engage their serious disagreements over the substantive issue, he prefers the lazy route.