While it is useful to rebut charges and get your arguments out in circulation, you have to understand that arguments and evidence have little impact on people as long as their feelings tilt them against you.
The word 'hate' is a very carefully chosen word. There's got to be a real sense of revulsion and disgust. People are looking for someone to blame, someone who's the cause of their problems, and it should be the gun industry. These guys are the living embodiment of the slogan, 'Guns don't kill people-people kill people'. They're complete mercenaries.