USA constitution is guarantee "gun", because "America citizens have the freedom to overthrow the tyranny".

In 1789, the first Congress USA held, "the second amendment to the constitution as a" balance of power restricting the Congress and the president federal rights be submitted and approved in 1791, together with 9 other amendments to the constitution, the bill of rights "America" top 10. The provisions of article second USA "bill of rights": "- citizens the right to keep and bear arms shall not be infringed." This is America founders for a precautionary measure future government likely alienation and the establishment, a certain extent, prevent other countries have happened: barehanded citizens face repression government troops to be at a loss what to do, as individual Americans to protect private property and land their confidence increasing.

American "the second amendment to the constitution" the quite important, it is not to say that the "constitution" to give citizens the right to own arms, but to say, citizens to hold right to bear arms shall not be infringed. The two argument is different. That is to say, the legislators America think, this right, not a ruler to give a gift of citizens, but a kind of natural rights. Amendment to the Constitution can play a role, only to confirm this fact.

So, freedom and rights to the only potential significance, Americans after a heavy price to pay be obvious to people, why has not give up? This is because they believe that the two hundred years ago the theory: for the government must prevent runaway.