There's other issues that are much less clear and, in my experience, more likely to shift from discussions and debates into strife and arguments:
- Should private citizens be allowed to own firearms? Should they be allowed to carry them on the streets?
- What do we do about meth and opiates on our streets? What do we do about the associated property and violent interpersonal crime?
- Should we start building more nuclear power plants to cut down on our greenhouse gas emissions?
And locally:
- The city is expanding to the west. What should this neighbourhood look like?
These, I believe, are squarely in the realm of "politics" and unless you're having the discussion in an ideological bubble are likely to be much hotter-button issues.