Using lies to support your side. No, no, no!

I am a person who loves our constitution and the Bill of Rights and will defend them from all attackers. One thing I try to do is use facts in my arguments to keep my position on solid ground, fact based.
Now there are many sites and Facebook pages claiming to be in support our rights like the right to bear arms. The sad thing is these sites can be run by people who do not check facts or make up stories to stir up people to garner support. They think they are helping the cause but in actuality they do harm by making themselves and others look like hacks and nut cases.
A recent example concerns a statement purportedly made by Dianne Feinstein concerning guns. It goes something like "if everyone turns in their guns then the gunman would turn in his gun when he sees everyone else is unarmed.....it's human nature."
Well this is not to support Dianne Feinstein, I strongly dislike her, but she not say this at all, neither did Barbra Boxer. All this story does is discredit any valid argument in support of the 2nd amendment.

Here is a link.

http://www.snopes.com/media/notnews/feinstein.asp