The 2nd amendment was adopted in 1791, an era where the steam rail locomotive was the pinnacle of technology.
Today there are human controlled vehicles on another planet, and all of us have the ability to see and speak to another person anywhere else on Earth.
It's a different world now and the U.S. is a different country.
"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."
Irrelevant. The vast number of gun owners are not in a militia.
Need a gun to deter a "tyrannical government"?
The rifles that civilians could get in 1791 were essentially the same as what the military had. Overrun some cannon units before they can be spiked and you've evened the odds.
Today, an AR-15 works well enough to gun down cowering 5 year olds in their classroom, along with the young teachers trying to vainly protect them with their own bodies, but are no match for an Abrams tank, F-16, or Apache helicopter.
But on the flip side - it's already too late.
There are far too many guns in the States, and there's no way the government nor the people will be willing to institute the draconian policies required to clean them up.
If Sandy Hook didn't begin a change, then nothing will.
Look, Can We Please At Least Agree On One Thing About The 'Right To Bear Arms'? - Business Insider