History makes it clear that the Second Amendment is designed to serve four principal purposes.

First, it guarantees the states militia power of their own to balance the military power of the federal government;

Second, it promotes the God-given right of personal self defense;

Third, it enables the citizenry to repel foreign invasion; and

Fourth, it enables the citizenry to overthrow domestic tyrants and intimidate or discipline those who otherwise would be tyrants.

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