[hga]

Indeed they do, the national ACLU proper is a 501(c)(4) like the NRA, and both have 501(c)(3) charities for stuff that fits with and is legal to do under those constraints. E.g. the NRAs' does pro-bono legal work and the other "raises and donates money to outdoors groups and others such as ROTC programs, 4-H and Boy Scout groups" and in general funds education (and has been a contributor to the remarkable improvement in gun safety statistics).

Heh, and on the ACLU Wikipedia page, "In 2006, the ACLU of Washington State joined with a pro-gun rights organization, the Second Amendment Foundation, and prevailed in a lawsuit against the North Central Regional Library District (NCRL) in Washington for its policy of refusing to disable restrictions upon an adult patron's request."

I'm sure this happened because a) the Second Amendment Foundation's 2 activities are running an important annual conference and b) lawsuits, and they're in Washington state.

And in either case, government censorship of their core political speech, which in theory reflects that of their members (not always entirely true for the NRA), is intolerable and why Citizens United was absolutely necessary.