I agree. It's maddening because most of their "arguments" are based on twisted stats or flat out lies.
We need to do our part to combat it. Make sure you have ammo by reading things like Gun Facts as BC stated, and then fire back whenever you hear this BS.
Personally, I run five different firearms-related blogs, post to Facebook, and tweet about firearms truths nearly daily. I figure if I can arm just a couple of extra people a week with more info, and then they do the same, maybe eventually the anti-gun spew will no longer have a market.