Excellent article (IMO) by Thom Hartman today
The real reason the Second Amendment was ratified, and why it says "State" instead of "Country" (the Framers knew the difference - see the 10th Amendment), was to preserve the slave patrol militias in the southern states, which was necessary to get Virginia's vote. Founders Patrick Henry, George Mason, and James Madison were totally clear on that . . . and we all should be too.
Also check out this commentary on what we need to do today on Martin Luther King's birthday by Russell Simmons at Huffington Post. I found it touching and inspiring: