One of the best essays I have read in support of the Second Amendment and an individuals right to keep and bear arms was penned by a Liberal. You may want to check it out.
An excerpt:
Go give it a read, it is worth your while.And yet, are we not Americans? The Ku Klux Klansman, the ACLU-card holder, the communist, the Gay Pride activist, the militant feminist, the vegan, the Orthodox Jewish Rabbi, the black Baptist minister, the union-card boiler maker, and the retired Colonel in the U.S. Marine Corps all may differ from each other in terms of race, religion, and politics, but they all believe in the First Amendment.
You do not need to be Mormon to respect the concept of separation of Church and State, nor do you have to be a hate-spewing Klansman to value free speech.
By the same token, you do not have to own guns or even like guns to respect the Second Amendment.
What were our Founding Fathers thinking when they wrote the Second Amendment?
Well, they were not engaged in narrow partisan politics. They were not posturing for Fox News or trying to “make nice to soccer moms.�
These were serious men who came fresh from the white-hot forge of revolution. A war had just been fought to overthrow the yoke of an oppressive and unresponsive Government that invaded homes without warrant and which exposed the populace to "dangers of invasion from without, and convulsions within."
The Liberal Case for Gun Ownership