I love, love, love your goal here. Focusing on facts vs. opinions is great, but you may also want to include something in the post to humanize the two sides. Not sure what it would be. Maybe have statistics about each side? I don't know how hard it would be but if you could say something like, "Families who live in the country believe..." instead of "right-wingers believe..." Just an idea. Reminding people that their hated enemy is just trying to do what's best for their people and not everything they hear in their echo chamber about them is true.
[1] https://www.howtogeek.com/263443/how-to-see-when-a-text-mess...