The second amendment to our Constitution states "A well regulated militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed." So it clearly allows private citizens to keep guns.
According to Wikipedia the National Guard is a part of the reserve components of the United States and the National Guard units are under the dual control of the state and the federal government. The National Defense Act of 1916 required the use of the term "National Guard" for the state militias. However, others interpret it as meaning something different from back in the 1780s when our world was so much different. Now, rather than a militia we might consider the National Guard the modern day equivalent but that, too, is up for debate.
Is the National Guard an arm of the government or a balance to it?
Can we consider our well-armed police force as militia?
A government of the people, by the people, and for the people shall not perish from the earth. If the government overpowers the people they have the right to rise up in protest. If guns are not allowed for the use of private citizens they will be as helpless as the Jews were against the Nazis if the government has guns but the people do not.
Most citizens have already lost much of their personal privacy in the US because of the Internet. We can play around with the meaning of 200-year-old wording. What were considered "arms" back then were a world away from the "arms" of today.
An FBI report in 2011 lists an approximate 14,620 murders in the U.S.
There is a worn out argument that guns don't kill people but that people kill people. But it is true, nonetheless. People who have been convicted of a felony using a firearm should not be allowed to legally own a gun. The same goes for people deemed by physicians to be mentally incompetent. The ATF should keep a database of such persons and gun dealers should do background checks on people purchasing a firearm.
Laws only keep the law-abiding people from doing harm. Yes, the murder statistics in the U.S. are staggering. However, when you consider the number of people in the country the number of murders in relation to the population count is not so scary. Sure, any murder is beyond horrible.
Target practice and hunting are popular, lawful, sports for citizens. Why should the law abiding citizens who enjoy these sports be deprived of their right to own and use guns? Background checks are a good idea. But there could not be a law that would nor could prevent an evil-minded person from obtaining a firearm and committing mayhem with it.
It is obvious that there are strongly opposing opinions on the hot topic of gun control and there will never be anything even close to agreement.