Liberals seem to have a tough time deciphering certain portions of the writings of our Founding Fathers. Specifically, the Bill of Rights really seems to trip them up. For example, they read the Second Amendment protecting the right of the people to keep and bear arms to mean a right to carry a gun only if you are in the National Guard. 

Now the fact that the National Guard did not exist at the time the Constitution was written does not faze Liberals, they simply dislike what the Bill of Rights says so they create a new definition for it. A definition, which suits their agenda of limited liberties instead of, limited government.