Many groups on the left, following the example of the right, have been de-emphasizing or even abandoning the old 501(c)(3) format of tax-deductible charitable endeavor in favor of the 501(c)(4) format, which has fewer tax advantages but allows a wider range of frankly political activity.
For some on the progressive side, writes David Pozen, who teaches law at Columbia, this is in part a matter of giving up on the Supreme Court as an engine of far-reaching social change. “The 501(c)(3) form fit snugly into the postwar theory of legal liberalism, in which the federal courts were seen as the key agents of social reform and professionally managed nonprofits as their partners in that effort.” [The Atlantic]
I would add one observation, which is that this shift of focus from strategic litigation to electoral politics and organizing is exactly what many legal conservatives have been urging the left to do for two generations: if you want the law to change, don’t take your case to an unelected caste of elite judges, take it to the people.