When tragedy strikes, as it did in two mass killings earlier this month, there is always the urge to pressure the government do something. Governments are animated by the belief that doing something — any demonstrable overt behavior — will show that they are in control. I understand the natural fears that good folks have that an El Paso or a Dayton episode might happen again, but doing something for the sake of appearance can be dangerous to personal liberty.

When the Constitution was written, the idea of owning arms and keeping them in the home was widespread. The colonists had just defeated the armies of King George III. The colonial weapon of choice was the Kentucky long rifle, while British soldiers used their army-issued version of Brown Bessies. Each rifle had its advantages, but the Kentucky (it was actually a German design, perfected and manufactured in Pennsylvania) was able to strike a British soldier at 200 yards, a startlingly long distance at the time. The Bessies were good for only about 80 yards.

Put aside the advantages we had of the passionate defense of freedom and homeland, to say nothing of superior leadership, it doesn't take any advanced understanding of mathematics or ballistics to appreciate why we won the Revolution.

It is a matter of historical fact that the colonists won the war largely by superior firepower.

Six years after the war was over, delegates met in Philadelphia in secret and drafted what was to become the Constitution. The document, largely written in James Madison's hand, was then submitted to Congress and to the states, which began the process of ratification.

By then, Americans had already formed two basic political parties. The Federalists wanted a muscular central government and the Anti-Federalists wanted a loose confederation of states. Yet the memory of a Parliament that behaved as if it could write any law, tax any event and impair any liberty, coupled with the fear that the new government here might drift toward tyranny, gave birth to the first 10 amendments to the Constitution — the Bill of Rights.

The debate over the Bill of Rights was not about rights; that debate had been resolved in 1776 when the Declaration of Independence declared our basic human rights to be inalienable. The Bill of Rights debates were about whether the federal government needed restraints imposed upon it in the Constitution itself.

The Federalists thought the Bill of Rights was superfluous because they argued that no American government would knowingly restrict freedom. The Anti-Federalists thought constitutional restraints were vital to the preservation of personal liberty because no government can be trusted to preserve personal liberty.

Second among the personal liberties preserved in the Bill of Rights from impairment by the government was the right to self-defense. Thomas Jefferson called that the right to self-preservation.

Fast-forward to today, and we see the widespread and decidedly un-American reaction to the tragedies of El Paso, Texas, and Dayton, Ohio. Even though both mass murders were animated by hatred and planned by madness, because both were carried out using weapons that look like those issued by the military, Democrats have called for the outright confiscation of these weapons.

Where is the constitutional authority for that? In a word: nowhere.