Any truly result-driven company's premptive measure for dealing with these sorts of annoyances (for all employe*s), should be the solution of deeming non-work-related discussion involving politics, religion, race and such divisive topics as "unsuitable for the workplace". Discussion serious-enough to spur opinionated ramblings and ideological smartassness, to say the least, that's not work-related and that's conducted during working hours, must be ideally stated in all employee contracts as a clear set of terms a prospective candidate must comply with avoiding.