This particular force is firearms. If governments and thieves and general assailants did not have these things, maybe we wouldn't need them. Bears are very real natual enemies to man, and it is difficult to dissuade them with sticks. A Privilege, on the other hand, is something that has been 'granted' to you by another human. When one grants you permission to enter his house, or use his telephone, or borrow his automobile, he is granting you a Privilege.
Privileges are things that CAN be regulated, and given and taken away.
The Bill of Rights is a legal document that was written to protect our Rights from those who might confuse the difference between a Right and a Privilege. Unfortunately, many now do not know there is a difference, including our lawmakers. Hence, the confusion and disagreement on why Guns are protected from regulation. Here we must also take into consideration many factors. Let's not disclude the bombs that were a part of this mayhem.