Earlier quoted context omitted.
Totally true, and not what is being discussed. To quote myself a couple of lines up: "We are all aware that the law has various (mostly arbitrary) limits. The question being asked is what consistent limit should be applied in general?" I.e. the question is "aught", you are merely reiterating what "is" (which no one disagrees with).
The idea that a protected class as defined by US Federal Law can be determined by a "consistent limit [to] be applied in general" is a categorical misunderstanding of the term protected class. Furthermore, the designation of a protected class is hardly the outcome of "(mostly) arbitrary limits". A quick visit to the link I provided in my earlier comment shows a diverse range of peoples grouped together as protected c…
Now, whether non-medallion owning contractors ought to be a protected class I cannot say, but I can say that such a designation will not come from facile calls for consistency in determining members of a protected class.
You are quite right that moral philosophy and other rational processes are not a way to appeal to the mob. Cheap slogans ("make America great again"), tribalism, flattery, shared sense of danger an shared enemies are far more effective. That's one thing (actually the only thing) I like about Trump - he isn't even pretending that there is any substance to politics. Definitely shines a light on the fallacy of democracy.