If we argue with statements easily shown to be inaccurate, we look like idiots.
Without going through them one at a time, we can find that many of the rampage shooters bought their guns legally.
Cho, Lanza, Loughner, Whitman, etc.
Also, many folks have been claimed to be guilty and aren't. They were prosecuted by mistake or unscrupulous DAs.
We are better with the lawyers than not. If you get picked up for a gun violation - you will be happy to have a lawyer.
So, I suggest rants are not productive on TFL.