If you’re a US citizen, consider joining the DSA. I’m a long-time member. I think it’s safe to say the DSA has, historically, been a disorganized parody of a leftist organization (as much as I love and respect many of the people in it that I’ve worked with), but things are changing. There’s an effort with momentum to turn it into a functioning political party, and not a bullshit green party style party which runs a candidate every four years while being functionally indistinguishable from a grift, but to put in the real work from the ground up to make a party that cares about winning elections and materially making our lives better.
The time to do this was 20 years ago, but we can’t keep delaying it. It’s now fully unconscionable to throw up our hands after some halfhearted discussions about FPTP and game theory every four years while actively watching our world deteriorate. There are other ways, but they don’t start at the ballot box, and they all involve organizing. This is true even if your politics and mine are different. If you care about our death machine funding a genocide, get involved with something, even if it’s the democratic party. It’s fucking boring. It feels like a larp. It’s a tedious ways to spend your Thursday nights after work. I get all that, but we need people who care about human life involved, even if our politics aren’t perfectly aligned, because that’s how you make broad, functioning, powerful coalitions that get shit done.