My family and I were having a chaotic political argument about the policies of a school district 2,000 miles away when I realized we need to focus. We either need to talk about a specific event or general ideas about what should happen. It's very easy to alternate back and forth. If we're talking about specifics, let's look up and read the actual policy of the school district. If we're talking in general, then stop referring to one school district 2,000 miles away as evidence that it's a wide spread trend, and let's see if we can agree, in general, on the way things should be in the abstract.
Which brings me to my point, and my advice. Focus on feelings and abstract beliefs first. Don't talk about (e.g.) the specific spending bill, talk about whether military defense or caring for the poor is more important from a personal and moral perspective. Make it a small conversation, leave the paid-for "facts" out of it. What do you and I believe? Can we find common ground? After we find some common ground on a small scale, maybe we can talk about a larger scale. Maybe then we can look at the facts.