I don't think the ACLU is nearly as partisan aligned or affiliated like that. But they're definitely more aligned, as a political matter, with the Democratic party. Partly for historical reasons (e.g. school busing, voting rights, criminal rights, etc.) But I totally get what you're saying.
The other part of it, though, is that we all need to learn to be a little more tolerant of political organizations and politicians taking stances that we personally disagree with. It's inevitable. To demand otherwise leads to more extremism, and leads to more fragmentation. If all we have are 10,000 smaller advocacy organizations, they're all going to drift left or right to a much greater extent. The only way to arrest that shift is to use yourself as an anchor; support the organization but then be sure to voice your opposition when they assume an inappropriate policy stance or affiliation.
"When we give you an opportunity to voluntarily submit information about yourself, we may give you the option of indicating that you permit us to share that data with other parties such as coalition partners or specific legislators. We will not share your data with such parties unless you have indicated that you permit us to do so."
https://www.aclu.org/american-civil-liberties-union-privacy-...
Because you are making a strong accusation: "they shared my data without my consent"
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.
> 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.