I would send them a link pointing them to snopes regardless. Copying in the other people is a tricky one though - not exactly rude as such but it could be seen as showing them up (though it might be deserved... and people should be point in the direction of the truth, if they have just been misled)
I'm pretty sure it wasn't my best judgment ever, but I did it anyway. I should have just been an adult and deleted.

I'm trying to decide how rude I've just been.
23/09/2010 04:37:13 PM
- 1015 Views
I don't receive political emails.
23/09/2010 04:44:50 PM
- 741 Views
Re: I don't receive political emails.
23/09/2010 04:47:19 PM
- 735 Views
Re: I don't receive political emails.
23/09/2010 04:52:55 PM
- 638 Views
Depends a bit on who it was
23/09/2010 05:11:38 PM
- 698 Views
It's a builder we work with occasionally.
23/09/2010 08:29:43 PM
- 748 Views
Normally I ignore them
23/09/2010 05:16:11 PM
- 633 Views
I don't think it was rude, but I might if I got your e-mail and disagreed with you
23/09/2010 05:17:36 PM
- 750 Views

Well, you are a Yankee. So there's no telling what the limits of your rudeness could be.
*NM*
23/09/2010 05:29:34 PM
- 347 Views

It's not rude. It's helpful.
23/09/2010 07:04:51 PM
- 742 Views
I did not send it to my mother. She would have received it well (been there, done that).
23/09/2010 08:35:35 PM
- 796 Views
I do that with EVERY email forward of that type.
23/09/2010 11:20:12 PM
- 768 Views
That isn't rude. That is moral. You did the right thing. He was rude for spreading lies.
23/09/2010 11:43:31 PM
- 739 Views
I've gotten people to take down Facebook notes replicating such emails by posting Snopes links.
24/09/2010 12:28:37 AM
- 776 Views
The only political e-mails I get, are from my dad, I delete them. *NM*
24/09/2010 12:31:50 PM
- 406 Views
I've only done that once; I mostly find them amusing, but that one was too much.
26/09/2010 08:49:05 AM
- 716 Views