That really doesn't speak to the usefulness of the distinction. To the extent that workers, as a whole, have common goals (like capturing a bigger share of the productivity gains, for instance), it probably make sense to organize as a single group to pursue those goals.
The right also organizes humans into us-vs-them: the natives versus the immigrants, the faithful versus the infidels, and so on. Whether those make sense depends only on the values, way of living or material conditions you want to protect and whether the other group is a menace to them.
The right also organizes humans into us-vs-them: the natives versus the immigrants, the faithful versus the infidels, and so on. Whether those make sense depends only on the values, way of living or material conditions you want to protect and whether the other group is a menace to them.