A man in our extended family once did something heinous. It was an act that, by any measure, was monstrously inappropriate and very much illegal. When everyone found out what he had done, we were all very much shocked because he was, far as we could tell, an honorable enough man.
He'd served in the military and held a thankless city job for countless years. He wasn't anybody's idol, but had done his best to raise his children and protect his family. But then he did this thing and everything changed. Everyone in the family knows he did it, even if none of us were there when it happened. He's never acknowledged it publiclly, but he's had to do so privately. It's melted into this unseemly, unshakeable stink.