Unenumerated rights are often considered by SCOTUS when handing down decisions and the intent of the framers and can dovetail nicely with clarifying any ambiguities within the constitution.
The argument could be made that people convicted of violent crimes are domestic enemies and because providing for the common defense of the country is government's duty, arming proven domestic enemies are a dereliction of that duty.
The reasoning behind it is much the same as why a multiple DWI offender sometimes is never granted the privilege of a driver's license again.
They pose a very real threat to society.
The argument could be made that people convicted of violent crimes are domestic enemies and because providing for the common defense of the country is government's duty, arming proven domestic enemies are a dereliction of that duty.
The reasoning behind it is much the same as why a multiple DWI offender sometimes is never granted the privilege of a driver's license again.
They pose a very real threat to society.