I don't mean to be inflammatory but you are subjectively biasing the subject of "political discussions at work" out of concern for marginalized groups. In my experience this bias often has the opposite of intended result by providing what might be a marginalized group into a specialized class deserving extra-special care instead of equality, which eventually results in entitlement and possibly resentment.

If you want to protect marginalized groups write and enforce policies that focus on inclusion, equality, and anti-discrimination regardless of politics or preference. In other words: when nobody is special everybody is equally special.