There is this:

Next time, maybe pull over, offer help, and discuss frankly how wonderful it must feel that fellow Americans will pull over to help strangers, and how awful it is that the Bu$h (mis)Administration has left thousands to suffer and die in America. Keep talking loudly and hit as many points as you can. Either the Bu$hBot will learn something, or the Bu$hBot can tell you to leave and refuse your help. Either way, you win and have done the right thing.

and:

I understand, demgurl.
Completely and totally.
The last few days have been REALLY difficult for me at work. I have been full of the most seething, white hot rage at these people– the ones who were proclaiming their support for Bush before the election. Now they’re all “Oh I sent so much to the Red Cross.”
I feel like snapping “It’s the LEAST you could fu[**]ing do, you selfish bastard. It’s because of you and your selfishness that this happened.”
One of them asked me this morning was I ok…I looked upset. I had just heard New Orleans’ mayor on Air America in the car. I told her I was very upset about New Orleans and tried to turn around so my tears wouldn’t show.
“Oh I know…” she began, “but they’re getting relief in there today….”
And honestly, I turned around with HATE in my eyes, and through clenched teeth, said “That’s NOT what I was upset about.” We gazed at each other, and she knew EXACTLY what I meant.
But I’ve been cautioned before about politics. So I bit my tongue until it bled and left it at that.
Don’t feel bad. We’re liberals, but we’re not stupid. I’m having a really bad problem with this too.
Next time, stop to help, do everything right, be the bigger person, and then when you’re ready to drive off say, “You want might be intersted to know that you were just helped by a LIBERAL. It’s what we DO. HELP people.”
Try not to kick yourself too much. we’re not perfect.