Then go with a really fun topic. Why are the professional politicians consistently talking about things that cause big arguments that leave everyone feeling bitter and stubborn? Are they actually leading people to discuss the important political issues, or are they trying to stir up division and a fanatic voter base? Is the nature political discourse going to lead to a good outcome for either side of the argument? How should fair compromises be achieved?
If the call here is for interesting discourse then sure, all for it. Good list. But the title shows a confusion. Arguing politics isn't going down a list of talking points. Anyone doing that with their own family just isn't acting like a smart cookie and needs to understand that they are really bad at politics to the point where they might be damaging their own community.