Sane standard: purity tests in politics, benefit of the doubt for private individuals.
Real-world standard: fuck purity tests in politics, but hang the infidels for their thoughtcrimes.
Conversation
"Why are our politics so dysfunctional," I ask, as I loudly declare that my preferred candidate's recent corruption scandal doesn't matter because <other candidate's> voters are all scumbags who believe <stupid, immoral shit>, and that's what really matters anyway.