Margaret Sanger isn't alive, but her movement still is. Maybe not with the same goal, but with the same intention.
You say that there's no purpose to bring up people who died decades ago, but yet when President Trump says MAGA, that's immediately what you do. You associate that slogan to a time when slavery occured, but fail to emphasize the successful things that America did at that time. You miss the entire point, and I'm not saying you per se, but democrats in general. So now I ask you the same question, what purpose does it serve to bring up people who died decades ago? Oh yeah, that's right. When it benefits the argument. Period.