Yserbius > The good: Less people dying from guns, less mass shootings, less murders. The harm: Some innocent people will loose their firearms.
This all makes sense – in short term. What if some day, USA population would need guns to protect from either external or internal dictators? For external enemy, first thing Ukrainian government started doing when they realized that the attack is coming – started giving guns to population (obviously, untrained). For internal threats – right now half of the country think that Trump is Putin’s buddy and another half that Dems are fixing elections. So, it would seem that 100% should agree that Democracy needs protection. If you rescind 2nd amendment now, you won’t be able to put it back when needed.
Note that USA has an impressive record of democracy in last 200+ years comparing to most other countries. So, why mess with a country of success. Obviously, some changes are required with changes in technology and politics. I would apply a Jewish approach here – that only a court that is wiser than the original can change fundamentals.