Like what? (Last time I asked this question on HN I got about 5 answers that said "Call your Congressman," which I don't agree with.) I honestly don't believe there's anything I can do that would change things meaningfully, even if I dedicated my whole life to it, short of maybe starting a major political movement, which I highly doubt I'd be able to do.
Even simply refusing to join these organizations doesn't help as much as you might think. NSA can teach smart people to program if it comes to that, so there's always someone to fill the seat. Only now, the person filling that seat has ethical norms even farther away from yours.