It can be checked using the wayback machine: https://web.archive.org/web/20020802064342/http://www.aclu.o...
> However, the names and postal addresses of ACLU members, ... may be exchanged or rented to other organizations ... > members who join through the ACLU Freedom Network website are provided with an opportunity to opt out of this exchange.
That's from 2002 and they have similar paragraphs in all their updated privacy statements. But that's a moot point I guess, because your complaint wasn't that your data was shared.
My donation happened more than 10 years ago (probably closer to 15), so who knows what their privacy stance was then. Quoting their current one certainly doesn't shed any light onto that.
In any case, while the fact that they shared my info was annoying, it also wasn't the point I was getting at. My point was: they chose to lump themselves in with unrelated left-wing causes by sharing my data, and I'm unhappy they chose to make civil liberties seem like a left/right thing by doing that.