Slandered!

I was slandered today, which was something I've never in my life had happened. If you're going to insult me, I occasionally joke, do it with panache; I won't descend to your level, though, however enraged I might become.
Today was mostly good, barring the immaturity of the People Across the Street. People registered to vote; a few of them offered anecdotes about their woes as justification for registering and wanting to volunteer. One of the people who registered counted herself among the People Across the Street, so since the boss was out running errands, I offered to take it across myself--several people have registered similarly, and their forms were trotted across the street as a courtesy. Yes, we could just as easily take them to the courthouse ourselves, which is what we were doing before this debacle.
So... I got across the street without being squashed by any passing cars, put the form on the table and said, "I believe this is one of yours."
Well. To make a long story short, I was sent back out with the registration form, and one of the people in the Office Across the Street had the temerity to suggest that I would engage in fraud by altering the person's registration form. I didn't reply, but instead drew myself up, became very icy and formal, thanked them, and left.
I'd be committing fraud if I did that, which is obviously illegal. By suggesting that I'd do such a thing, the person who said it was committing slander, which is also (obviously) not very good behavior. So, if you're going to insult my association with good people and insult my political beliefs, at least do it with some style instead of trying to bait me and bring me down to your level... 'cause it just doesn't work.