The above is a link to what I believe to be one of the most even handed reports I have ever seen on PBS. This professor is from George Mason University which may as well be in the heart of washington DC.
Read her bio here http://www.law.gmu.edu/faculty/direc.../malcolm_joyce
Her points are all very difficult to argue against and she spends 8 solid minuets discussing her constitutional view with regard to RTKBA, assult weapon bans, magizine limits, and the Heller decision.
If this doesn't prove our point frankly I don't know what will.