Another irrelevant bleat from yet another pointy-headed college type who’s never done anything in his entire life except sit in a library reading books and writing pointless articles.
The 2nd Amendment refers to the security of a free state. States have militias, the United States does not have a militia, it has a standing army. Apart from revenue agents, the United States did not have a national constabulary or police force until the 20th Century’s FBI and DEA. We have locally-elected sheriffs and state and locally-hired municipal police chiefs. Sheriffs can form posses. The posse comitatus act forbids involvement of the military in law enforcement. This reduces the opportunity for tyrants to arise. Our fear is the creation (as Obama has suggested) of a “civilian national security force that’s just as powerful, just as strong, just as well-funded as the military.”