First, don't react. Being mindful and well-measured earns respect. Control the impulse to respond immediately. Let the dust settle so you can see more clearly. There will be a constant stream of nonsense, idiocy, and outrages to endure. Don't spend your time and energy on chasing the rabbits down the holes. Don't engage the trolls. Block and delete them. They're not worth the time and they're being deployed to waste yours. Stop it. But stay informed.
Second, don't contribute to the noise, be the signal. Check the facts and sources before you share information. Use reliable sources, check the URL's, know who you're citing and what their evidence is for what you're sharing. Take stuff down when you're wrong. We all are sometimes. There's enough bullshit in the world without contributing to it.
Third, remember to focus on the policies that you care about, where you are willing to invest your time. Make sure that you know the pros and cons of the debates. No idea is completely perfect. Reality is messy and nothing is 100 percent accurate, not ever. Accept that truth. Acknowledge the things that are uncertain and be honest about what you know and what you don't know. Make the best case you can with the information you have. Keep learning. Know things.
Finally, stay civil, peaceful, but be persistent Lean in. Don't give them a reason to escalate. They have a real army now. Don't ignore the opposition's argument. Carefully unwrap it and tear it into little tiny pieces. Then feed it back to them with a spoon. Learn the art of rhetoric, read Aristotle, but don't stop with him. Keep going and you'll discover something important. It's hard to debate without referring to specifics. You'll need to understand how things work in government, in specific areas of public policy, and how those policies impact real people in their lives. We have a lot of books on a variety of issues.
One last thing, remember that it's not about one thing, it's about a lot of things. Don't lose sight of the needs of others in sharing support and trust in one another. Give your support, your time, your attention, and whatever resources you can afford. We're in this together.