Home Guy wrote:

This has got nothing to do with rights and freedoms.

How can you explain that you have the right to own a gun - but not a
machine gun?

Huh? I own two: An Uzi and a fully automatic AK-47. Both are fully legal.


Or a rocket launcher or bazooka or high explosives or all sorts of
other deadly / destructive products?

Those, too, can be lawfully owned by American civilians.


Why aren't you crying foul that you can't buy hand grenades or land
mines?

Huh? Americans CAN buy hand grenades or land mines. Of course they, and the
items above, may be subject to local or state restrictions, but there is no
federal prohibition, per se, declaring them contraband.


Or that you can't grow and smoke your own marijuana?

Because marijuana IS contraband under federal law.